COSY-Experiments: A general overview and selected...

60
Mitglied der Helmholtz-Gemeinschaft COSY-Experiments: A general overview and selected results February 11, 2014 | Michael Hartmann (FZ Jülich)

Transcript of COSY-Experiments: A general overview and selected...

Page 1: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Mit

glie

d d

er

Helm

holt

z-G

em

ein

schaft

COSY-Experiments

A general overview and selected results

February 11 2014 | Michael Hartmann (FZ Juumllich)

Feb 11 2014 | M Hartmann J-PARC workshop 2

Content

Physics program

(ANKE PAX TOF WASA)

Preparatory work for FAIR

(HESR and PANDA CBM NUSTAR hellip)

Future plans

(EDM)

Feb 11 2014 | M Hartmann J-PARC workshop 3

COSY ANKE

TOF

PAX

EDDApolarimeter WASA

COSY Overview

hellip the machine for hadron spin physics

Circumference 183 m max beam momentum 37 GeVc

Polarized proton and deuteron beams

Electron and stochastic cooling

Feb 11 2014 | M Hartmann J-PARC workshop 4

WASA ABC structure

Isospin decomposition of ABC resonance structurePhys Lett B 721 (2013) 229rarr pure isoscalar effect If resonance in np systemrarr effect should be present in np scattering

Most sensitive observable in np scatteringanalyzing power Ay and its energy dependence near θCM asymp 90deg

First resultcorresponding signalat resonance position

θCM asymp 90deg

isovector+

isoscalar

isoscalar

isovector

WASA

WASA

WASA

WASASAID

np rarr nprarr

Further analysisneeded

Feb 11 2014 | M Hartmann J-PARC workshop 5

WASA CSB in dd rarr 4He π0

Probing hadronic effects of the u- and d-quark mass difference

Charge Symmetry u harr d subgroup of Isospin Symmetryinsensitive to charge difference

dd rarr 4He π0 CS σ = 0 CS σ ~ |MCSB|2 ne 0

Stephenson et al σtot(Q = 14 MeV) = 127 plusmn 22 pb(PRL 91 (2003) 142302) σtot(Q = 30 MeV) = 151 plusmn 31 pb

rarr consistent with s-wave π-production

Contribution of p-wave at higher energies (Q = 60 MeV)

Experimental 3He4He separationchallenges σtot(3He n π0) asymp 3∙104 σtot(4He π0)

Pilot run σtot prelim = (118 plusmn 18stat plusmn 13sys plusmn 8norm) pbfirst differential cross section

dd rarr 4He γγ

+ dd rarr 3He n π0

+ dd rarr 4He π0

theoretical analysis amp prediction

rarr more precise data needed 8 week production run with optimized setup (FebMar 2014)

Feb 11 2014 | M Hartmann J-PARC workshop 6

TOF Hyperon production

Separation of singlet and triplet scattering length

(see eg EPJA 49 (2013)157 PLB 688 (2010) 142

Feb 11 2014 | M Hartmann J-PARC workshop 7

Recent precision data (pp elastic scattering Ay)

ANKE ANKEEDDA EDDAAy Ay

EDDA ANKE NN-scattering

fast proton (FD) slow proton (STT)

prelim

inar

y

great impact on NN phase shifts (SAID group)fundamental quantities for nuclear physics

Ongoing double polarized measurements (np system)

Feb 11 2014 | M Hartmann J-PARC workshop 8

ANKE Double-polarized experiments

Double-polarized experiments approved

ABS Openable storage cell(luminosity factor 5 more)

(i) p n n p (AI AIJ)

(ii) p n pps (Axz parameter)

(iii) p p K+ p (CYY coefficient)

down to 10 mm diameter about 85 polarization

httpcollaborationsfz-juelichdeikpankeproposalsshtml

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
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Page 2: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 2

Content

Physics program

(ANKE PAX TOF WASA)

Preparatory work for FAIR

(HESR and PANDA CBM NUSTAR hellip)

Future plans

(EDM)

Feb 11 2014 | M Hartmann J-PARC workshop 3

COSY ANKE

TOF

PAX

EDDApolarimeter WASA

COSY Overview

hellip the machine for hadron spin physics

Circumference 183 m max beam momentum 37 GeVc

Polarized proton and deuteron beams

Electron and stochastic cooling

Feb 11 2014 | M Hartmann J-PARC workshop 4

WASA ABC structure

Isospin decomposition of ABC resonance structurePhys Lett B 721 (2013) 229rarr pure isoscalar effect If resonance in np systemrarr effect should be present in np scattering

Most sensitive observable in np scatteringanalyzing power Ay and its energy dependence near θCM asymp 90deg

First resultcorresponding signalat resonance position

θCM asymp 90deg

isovector+

isoscalar

isoscalar

isovector

WASA

WASA

WASA

WASASAID

np rarr nprarr

Further analysisneeded

Feb 11 2014 | M Hartmann J-PARC workshop 5

WASA CSB in dd rarr 4He π0

Probing hadronic effects of the u- and d-quark mass difference

Charge Symmetry u harr d subgroup of Isospin Symmetryinsensitive to charge difference

dd rarr 4He π0 CS σ = 0 CS σ ~ |MCSB|2 ne 0

Stephenson et al σtot(Q = 14 MeV) = 127 plusmn 22 pb(PRL 91 (2003) 142302) σtot(Q = 30 MeV) = 151 plusmn 31 pb

rarr consistent with s-wave π-production

Contribution of p-wave at higher energies (Q = 60 MeV)

Experimental 3He4He separationchallenges σtot(3He n π0) asymp 3∙104 σtot(4He π0)

Pilot run σtot prelim = (118 plusmn 18stat plusmn 13sys plusmn 8norm) pbfirst differential cross section

dd rarr 4He γγ

+ dd rarr 3He n π0

+ dd rarr 4He π0

theoretical analysis amp prediction

rarr more precise data needed 8 week production run with optimized setup (FebMar 2014)

Feb 11 2014 | M Hartmann J-PARC workshop 6

TOF Hyperon production

Separation of singlet and triplet scattering length

(see eg EPJA 49 (2013)157 PLB 688 (2010) 142

Feb 11 2014 | M Hartmann J-PARC workshop 7

Recent precision data (pp elastic scattering Ay)

ANKE ANKEEDDA EDDAAy Ay

EDDA ANKE NN-scattering

fast proton (FD) slow proton (STT)

prelim

inar

y

great impact on NN phase shifts (SAID group)fundamental quantities for nuclear physics

Ongoing double polarized measurements (np system)

Feb 11 2014 | M Hartmann J-PARC workshop 8

ANKE Double-polarized experiments

Double-polarized experiments approved

ABS Openable storage cell(luminosity factor 5 more)

(i) p n n p (AI AIJ)

(ii) p n pps (Axz parameter)

(iii) p p K+ p (CYY coefficient)

down to 10 mm diameter about 85 polarization

httpcollaborationsfz-juelichdeikpankeproposalsshtml

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 3: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 3

COSY ANKE

TOF

PAX

EDDApolarimeter WASA

COSY Overview

hellip the machine for hadron spin physics

Circumference 183 m max beam momentum 37 GeVc

Polarized proton and deuteron beams

Electron and stochastic cooling

Feb 11 2014 | M Hartmann J-PARC workshop 4

WASA ABC structure

Isospin decomposition of ABC resonance structurePhys Lett B 721 (2013) 229rarr pure isoscalar effect If resonance in np systemrarr effect should be present in np scattering

Most sensitive observable in np scatteringanalyzing power Ay and its energy dependence near θCM asymp 90deg

First resultcorresponding signalat resonance position

θCM asymp 90deg

isovector+

isoscalar

isoscalar

isovector

WASA

WASA

WASA

WASASAID

np rarr nprarr

Further analysisneeded

Feb 11 2014 | M Hartmann J-PARC workshop 5

WASA CSB in dd rarr 4He π0

Probing hadronic effects of the u- and d-quark mass difference

Charge Symmetry u harr d subgroup of Isospin Symmetryinsensitive to charge difference

dd rarr 4He π0 CS σ = 0 CS σ ~ |MCSB|2 ne 0

Stephenson et al σtot(Q = 14 MeV) = 127 plusmn 22 pb(PRL 91 (2003) 142302) σtot(Q = 30 MeV) = 151 plusmn 31 pb

rarr consistent with s-wave π-production

Contribution of p-wave at higher energies (Q = 60 MeV)

Experimental 3He4He separationchallenges σtot(3He n π0) asymp 3∙104 σtot(4He π0)

Pilot run σtot prelim = (118 plusmn 18stat plusmn 13sys plusmn 8norm) pbfirst differential cross section

dd rarr 4He γγ

+ dd rarr 3He n π0

+ dd rarr 4He π0

theoretical analysis amp prediction

rarr more precise data needed 8 week production run with optimized setup (FebMar 2014)

Feb 11 2014 | M Hartmann J-PARC workshop 6

TOF Hyperon production

Separation of singlet and triplet scattering length

(see eg EPJA 49 (2013)157 PLB 688 (2010) 142

Feb 11 2014 | M Hartmann J-PARC workshop 7

Recent precision data (pp elastic scattering Ay)

ANKE ANKEEDDA EDDAAy Ay

EDDA ANKE NN-scattering

fast proton (FD) slow proton (STT)

prelim

inar

y

great impact on NN phase shifts (SAID group)fundamental quantities for nuclear physics

Ongoing double polarized measurements (np system)

Feb 11 2014 | M Hartmann J-PARC workshop 8

ANKE Double-polarized experiments

Double-polarized experiments approved

ABS Openable storage cell(luminosity factor 5 more)

(i) p n n p (AI AIJ)

(ii) p n pps (Axz parameter)

(iii) p p K+ p (CYY coefficient)

down to 10 mm diameter about 85 polarization

httpcollaborationsfz-juelichdeikpankeproposalsshtml

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 4: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 4

WASA ABC structure

Isospin decomposition of ABC resonance structurePhys Lett B 721 (2013) 229rarr pure isoscalar effect If resonance in np systemrarr effect should be present in np scattering

Most sensitive observable in np scatteringanalyzing power Ay and its energy dependence near θCM asymp 90deg

First resultcorresponding signalat resonance position

θCM asymp 90deg

isovector+

isoscalar

isoscalar

isovector

WASA

WASA

WASA

WASASAID

np rarr nprarr

Further analysisneeded

Feb 11 2014 | M Hartmann J-PARC workshop 5

WASA CSB in dd rarr 4He π0

Probing hadronic effects of the u- and d-quark mass difference

Charge Symmetry u harr d subgroup of Isospin Symmetryinsensitive to charge difference

dd rarr 4He π0 CS σ = 0 CS σ ~ |MCSB|2 ne 0

Stephenson et al σtot(Q = 14 MeV) = 127 plusmn 22 pb(PRL 91 (2003) 142302) σtot(Q = 30 MeV) = 151 plusmn 31 pb

rarr consistent with s-wave π-production

Contribution of p-wave at higher energies (Q = 60 MeV)

Experimental 3He4He separationchallenges σtot(3He n π0) asymp 3∙104 σtot(4He π0)

Pilot run σtot prelim = (118 plusmn 18stat plusmn 13sys plusmn 8norm) pbfirst differential cross section

dd rarr 4He γγ

+ dd rarr 3He n π0

+ dd rarr 4He π0

theoretical analysis amp prediction

rarr more precise data needed 8 week production run with optimized setup (FebMar 2014)

Feb 11 2014 | M Hartmann J-PARC workshop 6

TOF Hyperon production

Separation of singlet and triplet scattering length

(see eg EPJA 49 (2013)157 PLB 688 (2010) 142

Feb 11 2014 | M Hartmann J-PARC workshop 7

Recent precision data (pp elastic scattering Ay)

ANKE ANKEEDDA EDDAAy Ay

EDDA ANKE NN-scattering

fast proton (FD) slow proton (STT)

prelim

inar

y

great impact on NN phase shifts (SAID group)fundamental quantities for nuclear physics

Ongoing double polarized measurements (np system)

Feb 11 2014 | M Hartmann J-PARC workshop 8

ANKE Double-polarized experiments

Double-polarized experiments approved

ABS Openable storage cell(luminosity factor 5 more)

(i) p n n p (AI AIJ)

(ii) p n pps (Axz parameter)

(iii) p p K+ p (CYY coefficient)

down to 10 mm diameter about 85 polarization

httpcollaborationsfz-juelichdeikpankeproposalsshtml

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 5: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 5

WASA CSB in dd rarr 4He π0

Probing hadronic effects of the u- and d-quark mass difference

Charge Symmetry u harr d subgroup of Isospin Symmetryinsensitive to charge difference

dd rarr 4He π0 CS σ = 0 CS σ ~ |MCSB|2 ne 0

Stephenson et al σtot(Q = 14 MeV) = 127 plusmn 22 pb(PRL 91 (2003) 142302) σtot(Q = 30 MeV) = 151 plusmn 31 pb

rarr consistent with s-wave π-production

Contribution of p-wave at higher energies (Q = 60 MeV)

Experimental 3He4He separationchallenges σtot(3He n π0) asymp 3∙104 σtot(4He π0)

Pilot run σtot prelim = (118 plusmn 18stat plusmn 13sys plusmn 8norm) pbfirst differential cross section

dd rarr 4He γγ

+ dd rarr 3He n π0

+ dd rarr 4He π0

theoretical analysis amp prediction

rarr more precise data needed 8 week production run with optimized setup (FebMar 2014)

Feb 11 2014 | M Hartmann J-PARC workshop 6

TOF Hyperon production

Separation of singlet and triplet scattering length

(see eg EPJA 49 (2013)157 PLB 688 (2010) 142

Feb 11 2014 | M Hartmann J-PARC workshop 7

Recent precision data (pp elastic scattering Ay)

ANKE ANKEEDDA EDDAAy Ay

EDDA ANKE NN-scattering

fast proton (FD) slow proton (STT)

prelim

inar

y

great impact on NN phase shifts (SAID group)fundamental quantities for nuclear physics

Ongoing double polarized measurements (np system)

Feb 11 2014 | M Hartmann J-PARC workshop 8

ANKE Double-polarized experiments

Double-polarized experiments approved

ABS Openable storage cell(luminosity factor 5 more)

(i) p n n p (AI AIJ)

(ii) p n pps (Axz parameter)

(iii) p p K+ p (CYY coefficient)

down to 10 mm diameter about 85 polarization

httpcollaborationsfz-juelichdeikpankeproposalsshtml

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 6: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 6

TOF Hyperon production

Separation of singlet and triplet scattering length

(see eg EPJA 49 (2013)157 PLB 688 (2010) 142

Feb 11 2014 | M Hartmann J-PARC workshop 7

Recent precision data (pp elastic scattering Ay)

ANKE ANKEEDDA EDDAAy Ay

EDDA ANKE NN-scattering

fast proton (FD) slow proton (STT)

prelim

inar

y

great impact on NN phase shifts (SAID group)fundamental quantities for nuclear physics

Ongoing double polarized measurements (np system)

Feb 11 2014 | M Hartmann J-PARC workshop 8

ANKE Double-polarized experiments

Double-polarized experiments approved

ABS Openable storage cell(luminosity factor 5 more)

(i) p n n p (AI AIJ)

(ii) p n pps (Axz parameter)

(iii) p p K+ p (CYY coefficient)

down to 10 mm diameter about 85 polarization

httpcollaborationsfz-juelichdeikpankeproposalsshtml

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 7: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 7

Recent precision data (pp elastic scattering Ay)

ANKE ANKEEDDA EDDAAy Ay

EDDA ANKE NN-scattering

fast proton (FD) slow proton (STT)

prelim

inar

y

great impact on NN phase shifts (SAID group)fundamental quantities for nuclear physics

Ongoing double polarized measurements (np system)

Feb 11 2014 | M Hartmann J-PARC workshop 8

ANKE Double-polarized experiments

Double-polarized experiments approved

ABS Openable storage cell(luminosity factor 5 more)

(i) p n n p (AI AIJ)

(ii) p n pps (Axz parameter)

(iii) p p K+ p (CYY coefficient)

down to 10 mm diameter about 85 polarization

httpcollaborationsfz-juelichdeikpankeproposalsshtml

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 8: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 8

ANKE Double-polarized experiments

Double-polarized experiments approved

ABS Openable storage cell(luminosity factor 5 more)

(i) p n n p (AI AIJ)

(ii) p n pps (Axz parameter)

(iii) p p K+ p (CYY coefficient)

down to 10 mm diameter about 85 polarization

httpcollaborationsfz-juelichdeikpankeproposalsshtml

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 9: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 9

COSY KKΦ pro- duction (ANKE )

(wwwfz-juelichdeikp orMH PoS 057 (2011))

DISTO

COSYKK amp Φ production in pp pd amp dd (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 10: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 10

ANKE pprarrppKK at = 51 MeV

Assumption Kp FSI effect

f(q) = 1(1-iaq) q relative momentum

a scattering length

ldquo3-body-FSIrdquo harr f(q1) f(q

2)

|a| asymp 15 fm

p

p

KK

Y Maeda etal PRC 77 (2008) 015204

strong Kp andor Kpp FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 11: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 11

ANKE ppKK production at εKK= 108 MeV

ldquooutside Φrdquo

no acceptance correction

M (K minus pp)

M (K + pp)F=F pp(q pp) times

F K p (q K p1)times

F K p(qK p 2)times

F K K (qK K )

QJ Ye etal PRC 85

(2012) 035211

|a| asymp 15 fm

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 12: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 12

ratio of exp KK inv mass to MC (without KK interaction)

KK production amplitudes (I=01)

pp rarr ppKK (total cross section)

pp KK Kp-FSIphase space

COSY-11 COSY-ANKE

24 MeV 51 amp 108 MeV

Y Maeda etal PRC 77 (2008) 015204

A Dzyuba etal PLB 668 (2008) 315

M Silarski etal PRC 80 (2009) 045202 88 (2013) 025205

QJ Ye etal PRC 85 (2012) 035211

DISTO

|B1B0|2 = 03 effective aKminusp=15i fm

aKminusp=245i fm

ANKE

QJ Ye etal PRC 87 (2013) 065203

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 13: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 13

ANKE pprarrdKK

A Dzyuba etal EPJ A 38 (2008) 1

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 14: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 14

ANKE pnrarrdKK

42 MeV lt lt 52 MeV 12 MeV lt lt 22 MeV

Y Maeda etal PRC 79 (2009) 018201

dK FSI is visible

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 15: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 15

pp rarr ppKKndash

pp rarr dKK

pn rarr dKKndash

pd rarr 3HeKKndash

dd rarr 4HeKKndash - COSY ANKE COSY-11 MOMO - DISTO

tota

l cro

ss s

ectio

n n

b

pd rarr 3He a0(980) WASA-COSY

BR90 weak signal (~1nb =256 MeV preliminary)

KK BR10 a0 f0

EPJ A 42 (2009) 1

PRC 75 (2007) 015204

Chuan Zheng PhD INP

Proton amp deuteron induced KK production (world data)

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 16: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 16

ANKE ppppФ total cross sections

ANKE DISTO

only tot

76 MeV (new)

ldquoSsrdquo + pp-FSI

DISTOhigher PWno pp-FSI

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 17: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 17

ANKE ppppФ (differential cross sections) at εΦ= 185 MeV

close to threshold the angular decay

distribution must display a sin2θΦK+

_____________________________

Φ in relative S-wave

transition from 3P1 (pp)-entrance channel to 1S0 (pp) final-state

clear effect of pp-FSI

MH etal PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 18: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 18

ANKE ppppФ production at εΦ= 76 MeV

ldquoinside Φrdquo

no acceptance correction

spin-averaged squared transition matrix element

multiplied by pp-FSI (Jost function)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 19: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 19

hellip and final differential distributions at 76 MeV

angular distributions (symmetric about cos θ = 0)

polar decay angle

ANKE DISTO (83 MeV)

QJ Ye etal PRC 85

(2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 20: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 20

hellip and final differential distributions at 76 MeV

185 MeV (for comparison)

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 21: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 21

hellip and ppФ total cross section dilemma

full

Ps

Pp

SpSs

76 MeV

Simplest way out A Φp threshold enhancement leads to a significant energy dependence of some of the AL l coefficients

QJ Ye etal PRC 85 (2012) 035211

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 22: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 22

ANKE pndФ (differential amp total cross sections)

Y Maeda etal PRL 97 (2006) 142301

pn d

pp pp

ddK+ = 3(a∙sin2

K++2b∙cos2K+)8 tot = a+b

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 23: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 23

ANKE Φ(rarrKK) production in pA - Φ-width measurement

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

SPring-8 photo-production later also by CLAS

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the Φ production in the following form

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

experiment at ANKE

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 24: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 24

Ф KK selection

all

delayed

all K

KK

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 25: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 25

Transparency ratios experiment and models

VMagas et al PRC 71 (2005) 065202LRoca (private communication)

ValenciaEOset et alMC amp Chiral Unitary Approach

EParyev JPhys G 36 (2009) 015103

MoscowEParyevNuclear Spectral Function Approach

HSchade BKaumlmpfer (private communication) cf PRC 81 (2010) 034902

RossendorfBKaumlmpfer et alBUU

Relevant features for models

forward acceptance

two-step production processes

σpnrarrpnΦ

σpprarrppΦ

asymp 4

MH etal PRC 85 (2012) 035206

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 26: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 26

In-medium width ΓΦ and σ

ΦN cross section

ΓΦlab

(ρ0)=pΦ

EσΦ N

ρ0LDA

Model dependent analysis of the ANKE data

MoscowPParyevRossendorfBKaempfer etalValenciaEOset et al

MH etal PRC 85 (2012) 035206

cf A Polyanskiy etal PLB 695 (2011) 74 () MH etal EPJ Web Conf 36 (2012) 00011

()

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 27: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 27

Double differential cross section of Φ production

+ common systematics ~ 20

ANKEBUUNSP appr

MH etal PRC 85 035206 (2012)

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 28: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 28

ANKE (non-Φ) KK production in pA - first lookpreliminary

C All (K+) Au All (K+)

go to ratios

prelim

inar

y

02 lt p(K+) lt 06 GeVc θ(K+Kndash) lt 12deg IM(K+Kndash) lt 1005 GeV

model calculation (NSP appr E Paryev) absorption from KN scatt data

U(Kndash) = -180

-126

-60

0 MeV

U(Kndash) = -180

-126

-60

0 MeV

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 29: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 29

ANKE (non-Φ) KK production in pA - first lookpreliminary

Underway calculations from

Valencia group (Eulogio Oset)

Angels Ramos amp Luis Roca

AuC CuC CC

U(Kndash) = 0

-60

-126

-180 MeV

preliminary

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 30: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 30

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

W Augustyniak etal PLB 718 (2012) 64

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 31: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 31

W Augustyniak etal PLB 718 (2012) 64

Experiment with COSY schematic

Spin-flipper

Results

COSY Cycle schematic

Preparation for longitudinal polarization build-up at COSY and PAX-at-CERNAD

Siberian Snake

PAX Transverse polarization buildup of a stored beam by Spin-Filtering

prediction SAID

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 32: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 32

HESR Layout at FAIR

Main machine parameterMomentum range 15 to 15 GeVcCircumference 575 m Magnetic bending power 50 TmDipole ramp 25 mTsAcceleration rate 02 (GeVc)sGeometrical acceptances for βt = 2 m horizontal 49 mm mrad vertical 57 mm mradMomentum acceptance plusmn 25times10-3

Juumllich is leading lab for design and construction

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 33: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 33

WASA

2 MeV e-Cooler (2013)

Barrier Bucket Cavity

Stochastic Cooling

Residual Gas Profile Monitor

Pellet Target

HESR accelerator component tests

HESR Prototyping and Beam Physics

e-Cooler

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 34: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 34

bdquoPreassemblyldquo of PANDA parts (TOF area)

CBM PANDA

CBM Silicon Tracker Tests

GEM Detector Tests

RPC ToF-Detector Tests

HADES Diamond Detector Tests

PANDA Straw-tube Tests

Micro-vertex Detector Tests

(Disk DIRC Tests)

Preparatory Work for FAIR Detectors

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 35: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 35

Permanent EDMs violate parity P and time reversal symmetry T

Assuming CPT to hold combined symmetry CP violated as well

Electric Dipole Moments

EDM Permanent spatial separation of positive an negative charges

EDMs are candidates to solve mystery of

matter-antimatter asymmetry

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 36: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 36

P Harris K Kirch hellip A huge worldwide effort

EDMs ndash Ongoing Planned

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 37: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 37

EDM ndash Charged particles (pd hellip)Why (charged particles)

Identification of the CPV-source Highest sensitivity (goal 10-29 e cm)

How (spin tracking in E- B-fields) Polarized particles Precision storage ring

Where (COSY at Forschungszentrum Juumllich) Storage ring (conventional) and polarized beams Accelerator and experimental experience in spin physics Strong environment (eg FZJ infrastructure JARA)

EDM MDMEDM signal = spin precession

out of the horizontal plane

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 38: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 38

EDM ndash StrategyCharged-particle EDM searches at storage rings represent a challenge

Stepwise approach

Spin-off Accelerators instrumentation metrology hellip

EDM Sensitivity

Time

RampD test measurements at COSY

Precursor expt with COSY

Design reportfor a dedicated SR

Now

10-24 e cm

10-29 e cm

First directmeasurements

for p d

First directmeasurements

for p d

2018

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 39: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 39

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 40: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 40

COSY has a strong physics program

spin physics and symmetries

COSY is an ideal test machine for FAIR

preparatory work

accelerator and detector components

COSY is the ideal starting place for charged - particle EDMs and precision measurements

RampD work first direct measurement and dedicated storage ring

Summary and Outlook

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 41: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 41

Extra slides

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 42: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 42

Goal10-29 e cm

~ 100 members(Aachen Dubna Ferrara Cornell Juumllich Krakow MichiganSt Petersburg Minsk Novosibirsk Stockholm Tbilisi )

10 PhD students

hellip watch for development of vertical polarization

EDMChallenges

Huge E-fieldsShielding B-fieldsSpin coherenceBeam position

Polarimetry()

Storage Ring EDM Project

JEDIJuumllich Electric Dipole Moment Investigations

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 43: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 43

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 44: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 44

RampD Work at COSY (preliminary)

Up-down asymmetry (~ horizontal polarization) as a function of time

Measured spin tune versus time in cycle

Precision of spin tune measurement

10-8 per 4 seconds

Averaged spin tune can be determined to 10-10 in a single 100s cycle

High-precision spin physics

Prerequisites to get long SCT

Beam bunchingBeam coolingSextupole correction SCT 400s

Envelop of 120 kHz spin precession

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 45: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 45

EDM Prototyping and Spin Physics

RF ExB Spin Flipper (2014)

EDM accelerator and detector component tests

Electrostatic Deflector

(2017)SQUID and Cavity BPMs

(ge2014)

Prototype Polarimeter

(ge2015)

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 46: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 46

Method of Φ-width measurement

Attenuation measurements of the Φ flux SPring-8 photo-production up-coming CLAS results

Φ survival probability in the nucleus matter rest frame In-medium width deduced from the target mass dependence

D=exp (minusintz

infin

dlΓlowast(ρ(r ))M 0

pΦ) ρ(r )minuslocal nuclear density

SPring-8 LEPS experiment COSY experiment at ANKE

Reaction γA rarr Φ Χ via KK decayγ-Energy 15 ― 24 GeV Targets Li C Al Cu

Result large σФN = 35+17 mb using

Glauber-type multi-scatt theory (free σФN asymp 8-10 mb)

T Ishikawa et al PLB 608 (2005) 215

Reaction pA rarr Φ Χ via KK decayp-Energy 283 GeV ( ε free NNasymp 76MeV )

Targets C Cu Ag Au

Momentum and (06 ― 16) GeVcangular range 0ole Θ

Φle 8o

-11

dominate KK BR =049

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 47: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 47

Transparency ratios experiment

Any interpretation of the transparency ratio has to rely on a detailed theoretical treatment

T A=

A

A

NR=

T AT C

=12A

A

C

nuclear transparency ratio

We present the A-dependence of the

Φ production in the following form

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 48: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 48

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

Γ tot=Γvac+ Γmed Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 49: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 49

Limited sensitivity to in-medium signal

d σV rarr X 1 X 2

d μsimA(μ)

ΓV rarr X 1 X 2

Γtot=

μΓ tot

(μ2minusmV

2)

2+ μ

2Γ tot

2

ΓV rarr X 1 X 2

Γtot

experimental observed mass distribution = convolution of spectral function with the branching ratio into channel being studied

After integration over all nucleons and pa-rameterizing strength function with Breit Wigner

FE

ich

sta

ed

t et al

PT

PS

up

pl 1

68

(20

07

) 49

5

tot= vac med Γmed (ρ(r ))=Γmed (ρ0)ρ(r )ρ0

In the low density approximation

3 effects limit sensitivityi yield reduced by increase of in-medium width (ΓmedgtgtΓvac)

ii reduced yield spreads out in mass difficult to distinguish from backgroundiii decays occur at low densities (ρ ltlt ρ0) even for low momentum selection

Mo

se

lLe

up

old

Me

tag

PT

PS

up

pl 1

86

(20

10

) 26

0

d σV rarr X 1 X 2

d μsim

1ρ2(r )

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 50: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 50

Methods of Φ-width measurement

Study of the meson spectral function - measure low momentum Φs via leptonic decays Not really done yet

- Φrarre+e- (BR = 310-4)

- ΦrarrK+K- (BR = 049 K- FSI hadronic potential)

KEK-PS pA 12 GeV Γ asymp 15 MeV m asymp -34)for ltpgt = 18 GeVc

RMuto et al PRL 98 (2007) 042501

Φrarre+e-

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 51: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 51

Invariant mass spectra for 6 momentum bins

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 52: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 52

pA p+CCuAu 283 GeV(ANKE)

phase space distribution of ϕ in ANKE acceptance

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 53: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 53

ppppФ (energy dependence)

OZI rule 42times10-3 ROZI

RФω(high energy) asymp (1 - 24)timesROZI

(in agreement with πN data and

the Φρπ and ωρπ coupling)

RФω(185-795 MeV ANKE) asymp 7timesROZI

PRL 96 (2006) 242301

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 54: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 54

P Muelich et al NPA 765 (2006) 188

Giessen-BUU calculations (SPring-8 data)

Γfree + Γcoll (~10 mb)

+ acceptance

+ Γdecay (K+K- 2 to 20 MeV)

Γcoll (~10 mb) x 26

(SPring-8)

Γ asymp 80 MeV 18 GeVc Φs

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 55: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 55

Valencia calculations (SPring-8-data)

E Oset et al Pramana 66 (2006) 731

Pout=A

A

N

D Cabrera et al NPA 733 (2004) 130

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 56: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 56

SPring-8 and up-coming JLAB-g7 (CLAS) result R Nasseripour et al AIP 1056 (2008) 223

ldquoagreementrdquo

CLAS γA rarr Φ(rarre+e-)X

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 57: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 57

Momentum dependence of the in-medium Φ-width

ldquoΦ framerdquo ldquonuclear framerdquo

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 58: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 58

Determination of for production

0380 0018 (5)

0495 0005 (1)

d2dpd ~ A

At Tp = 283 GeV

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 59: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 59

pprarrpK+Y0(1405 width 50MeV)rarrK-p

PRC 77 (2008) 015204PLB 660 (2008) 167

pprarrppK+K- 283 GeV

pprarrpK+(1405) 283 GeV

K-p

Simplest description of the I = 0 coupled-channel system is provided by a separable-potential model [eg PRC 76 (2007) 055204]

Suggests that (1405) is the main doorway state also for ppK+K- (similar conclusion Xie amp Wilkin PRC 82 (2010) 025210 N(1535)(1405)K )

Should analyse and K-p production at the same time

C Wilkin pers communicationarXiv08120098

K-p Invariant mass [MeV]Invariant mass [MeV]

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60
Page 60: COSY-Experiments: A general overview and selected resultscollaborations.fz-juelich.de/ikp/anke/proceedings/...Feb. 11, 2014 | M. Hartmann J-PARC workshop 3COSY ANKE TOF PAX EDDA polarimeter

Feb 11 2014 | M Hartmann J-PARC workshop 60

Model elastic K+K- rescattering plus contribution of a K0K0 pair production followed by charge exchange rescattering

PLB 668 (2008) 315K-matrix formalism three basic simplifications (I) constant elements of K-matrix (ii) isospin invariance broken only by K0 ndash K mass difference(iii) distortions are taken only in first order (s-wave scattering formula have transparent interpretations)

ldquoelastic scatteringrdquoldquocharge exchange scatteringrdquo

KK production amplitudes (I=01)

  • COSY Report
  • Content
  • PowerPoint-Praumlsentation
  • Results from WASA at COSY
  • Slide 5
  • Slide 6
  • Slide 7
  • Slide 8
  • Slide 9
  • Slide 10
  • Slide 11
  • Slide 12
  • Slide 13
  • Slide 14
  • Slide 15
  • Slide 16
  • Slide 17
  • Slide 18
  • Slide 19
  • Slide 20
  • Slide 21
  • Slide 22
  • Slide 23
  • Slide 24
  • Slide 25
  • Slide 26
  • Slide 27
  • Slide 28
  • Slide 29
  • Slide 30
  • Slide 31
  • HESR Layout at FAIR
  • Slide 33
  • Slide 34
  • Slide 35
  • EDMs ndash Ongoing Planned
  • Slide 37
  • Slide 38
  • Slide 39
  • Slide 40
  • Slide 41
  • Storage Ring EDM Project
  • Slide 43
  • RampD Work at COSY (preliminary)
  • EDM Prototyping and Spin Physics
  • Slide 46
  • Slide 47
  • Slide 48
  • Slide 49
  • Slide 50
  • Slide 51
  • Slide 52
  • Slide 53
  • Slide 54
  • Slide 55
  • Slide 56
  • Slide 57
  • Slide 58
  • Slide 59
  • Slide 60