Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)
-
date post
21-Dec-2015 -
Category
Documents
-
view
227 -
download
1
Transcript of Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)
![Page 1: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/1.jpg)
sin21/sin2 via penguin processes
Beauty 2006Sep.25-29, Univ. of Oxford
Yutaka Ushiroda (KEK)
![Page 2: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/2.jpg)
Introduction
_
d
b_ c
c
sd
_wB0J/
K0 1sin 2
0
fS
A C
treeb ccs
d
b_ _
sssd
_gtB0
K0
, ’...w
1sin 2
0
efffS
A
penguinb sqq
Extra CPV phase from New Physics1 1 1sin 2 sin 2 sin 2 0eff
Time-Dependent CP asymmetry in B0 decays
![Page 3: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/3.jpg)
SM Contamination
+1KsKsKs
1Ks
P’
T
P
T’
Ks
Ks
f0Ks
Ks~+1K+KKs
CPmode
T’Pb
dg
t
d
ss
s
W
2P’
b
dg
t
d
ds
d
W
2T
W b
d
d
uu
s4 W
b
dd
u
u
ss
s
4
Tree (Vub) contamination
Long distance effect
1sin 2 0 within the SM Need to know the size to claim NP
4Im 0 at tsV O
2
2
2 4 3
2 5 2 4 2 61 12 2 8
2 3 5 2 4 12 2
1 2 8
1 2
1 1
A
A
A i
V A i A O
A i i A A i
u-quark penguin~Vub
* Vus
b
dg
d
ss
s
W
u
Positive sin21
![Page 4: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/4.jpg)
Three theoretically-clean modes
Theoretical estimates of sin21/
Short distance effectQCDF:Beneke, PLB 620, 143 (2005)Cheng, Chua, Yang, PRD 73, 014017 (2006)pQCD:Mishima, Sanda, PRD 72, 114005 (2005)SCET:Williamson, Zupan, PRD 74, 014003 (2006)
Long distance effect (is small)Cheng, Chua, Soni, PRD 72, 014006 (2005)
sin21/
QCDF
Reviewed in hep-ph/0605301 (talk by Chua in FPCP06)
Lazzaro’s talkat ICHEP06
![Page 5: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/5.jpg)
Status before summer
![Page 6: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/6.jpg)
Belle BaBar
K0
KKKS KS
KLKS Time-dependent
Dalitz analysisK+KKS
K+KKS00
K+KKL
KKKS
KKKL
f0K0 f0KS
KKK0 KKexcl. KS
’K0
’(KS ’(KS
’(3KS
’(KS ’(KS
’(3KS
’(KL ’(KL ’(3KL
3KSKS
KSKS
KSKS
KS
KS0 KS
KS KS
Reconstruction modes347MBB535MBB
KSKS
KSKS
![Page 7: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/7.jpg)
Belle BaBar
K0
KKKS KS
KLKS Time-dependent
Dalitz analysisK+KKS
K+KKS00
K+KKL
KKKS
KKKL
f0K0 f0KS
KKK0 KKexcl. KS
’K0
’(KS ’(KS
’(3KS
’(KS ’(KS
’(3KS
’(KL ’(KL ’(3KL
3KSKS
KSKS
KSKS
KS
KS0 KS
KS KS
Reconstruction modes347MBB535MBB
KSKS
KSKS
![Page 8: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/8.jpg)
1516 65 KKK0signal
1516 65 KKK0signal
Obtain CP parameters for 2-body and 3-body modes simultaneously
347MBB
hep-ex/0607112
BKKK0 Time-dependent Dalitz
K+KKS
K+KKS00
K+KKL
Intermediate resonances ( (1020)K0, f0(980)K0, X0(1550)K0, c0K0, DK, DsK) a
nd NR
![Page 9: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/9.jpg)
K0: sin2eff = +0.12 0.31(stat) 0.10 (syst)K0: sin2eff = +0.12 0.31(stat) 0.10 (syst)
measurement (not sin2)
excludeat 4.6
0 tagB0 tagB
whole DPS
K K K
CPA 0.034 0.079 0.025
0.361 0.079 0.037eff
Fit to low KK mass region (<1.1GeV)
0CP
0
A 0.18 0.20 0.10
0.06 0.16 0.05eff
K
K
0CP 0
00
A 0.45 0.28 0.10
0.18 0.19 0.04eff
f K
f K
First in f0KK
347MBB
hep-ex/0607112
+0.070.50 0.250.04
Cf. BaBar 2005
![Page 10: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/10.jpg)
B0 K0
B0 mass
B0 momentum
(bkg subtracted)
KK, KS
KK, KS
KSKL, KS
114 17 KL signal
114 17 KL signal
2461840922730721 KS signal
2461840922730721 KS signalNew mode
hep-ex/0608039hep-ex/0608039
535MBB
KK
![Page 11: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/11.jpg)
TCPV in B0 K0
“sin21” = 0.50 0.21(stat) 0.06(syst) A = 0.07 0.15(stat) 0.05(syst)
“sin21” = 0.50 0.21(stat) 0.06(syst) A = 0.07 0.15(stat) 0.05(syst)
KS and KL combined background subtracted good tags t –t for KL
t distribution and asymmetry
Consistent with the SM (~1lower) Consistent with Belle 2005
(Belle2005: “sin21” = +0.44
Consistent with the SM (~1lower) Consistent with Belle 2005
(Belle2005: “sin21” = +0.44
unbinned fitSM
535MBB
hep-ex/0608039hep-ex/0608039
![Page 12: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/12.jpg)
TCPV in B0 f0KS
“sin21” = 0.23(stat) 0.11(syst) A = 0.15(stat) 0.07(syst)
“sin21” = 0.23(stat) 0.11(syst) A = 0.15(stat) 0.07(syst)
377 25 f0KS signal377 25 f0KS signal
Raw symmetryB0 mass
good tags mass
535MBB
hep-ex/0609006hep-ex/0609006
f0
![Page 13: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/13.jpg)
TCPV in B0 KKKS
840 34 KS signal
840 34 KS signal
Raw symmetryB0 mass
good tags
“sin21” = 0.15(stat) 0.03(syst) (CP-even) A = 0.10(stat) 0.05(syst)
“sin21” = 0.15(stat) 0.03(syst) (CP-even) A = 0.10(stat) 0.05(syst)
+0.210.13
535MBB
hep-ex/0609006hep-ex/0609006
0.93 0.09 0.05f mixture of CP even and odd states
(2005)
![Page 14: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/14.jpg)
Belle BaBar
K0
KKKS KS
KLKS Time-dependent
Dalitz analysisK+KKS
K+KKS00
K+KKL
KKKS
KKKL
f0K0 f0KS
KKK0 KKexcl. KS
’K0
’(KS ’(KS
’(3KS
’(KS ’(KS
’(3KS
’(KL ’(KL ’(3KL
3KSKS
KSKS
KSKS
KS
KS0 KS
KS KS
Reconstruction modes347MBB535MBB
KSKS
KSKS
![Page 15: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/15.jpg)
B0 'K 0
(bkg subtracted)
B0 massB0 momentum
535MBB
hep-ex/0608039hep-ex/0608039
’ Ks() 794 36
(2) Ks() 363 21
(3) Ks() 100 11
Ks() 103 15
() Ks() 62 9
Total 1421 46
’() KL 392 37
() KL 62 13
Total 454 39
![Page 16: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/16.jpg)
TCPV in B0 'K 0
“sin21” = 0.64 0.10(stat) 0.04(syst) A = 0.01 0.07(stat) 0.05(syst)
“sin21” = 0.64 0.10(stat) 0.04(syst) A = 0.01 0.07(stat) 0.05(syst)
Consistent with the SM Consistent with Belle 2005
(Belle 2005: “sin21” = +0.62
First observation of TCPV (5.6in a single b s mode
Consistent with the SM Consistent with Belle 2005
(Belle 2005: “sin21” = +0.62
First observation of TCPV (5.6in a single b s mode
t distribution and asymmetry
'KS and 'KL combined background subtracted good tags t –t for 'KL
535MBB
hep-ex/0608039hep-ex/0608039
![Page 17: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/17.jpg)
B0 'K 0
347MBB
hep-ex/0607100
936 41 'KS signal
936 41 'KS signal
168 21 'KL signal
168 21 'KL signal
![Page 18: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/18.jpg)
TCPV in B0 'K 0
Cf. BaBar 2005: “sin2” = +0.36 0.13 0.03
“sin2” = 0.55 0.11(stat) 0.02(syst) A = 0.15 0.07(stat) 0.03(syst) “sin2” = 0.55 0.11(stat) 0.02(syst) A = 0.15 0.07(stat) 0.03(syst)
“sin2” 4.9 from zero.
347MBB
hep-ex/0607100
SK LK
0B0B
0B
0B
![Page 19: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/19.jpg)
Belle BaBar
K0
KKKS KS
KLKS Time-dependent
Dalitz analysisK+KKS
K+KKS00
K+KKL
KKKS
KKKL
f0K0 f0KS
KKK0 KKexcl. KS
’K0
’(KS ’(KS
’(3KS
’(KS ’(KS
’(3KS
’(KL ’(KL ’(3KL
3KSKS
KSKS
KSKS
KS
KS0 KS
KS KS
Reconstruction modes347MBB535MBB
KSKS
KSKS
![Page 20: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/20.jpg)
Vertex Reconstruction with KS
good tag
Ks track
IP profileBCP vertex
J/KS with the KS Vertexing
Raw
asy
mm
etr
y
Extrapolate KS track to the Interaction PointVertex reconstruction efficiency with a single KS : 30 to 45% (Belle), 60% (BaBar KS)
Events without the vertex can still be used for A-term measurement.
Validity confirmed with J/KS as a control sample.
1sin2 0.68 0.06
![Page 21: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/21.jpg)
TCPV in B0 KSKSKS
“sin21” = 0.30 0.32(stat) 0.08(syst) A = 0.31 0.20(stat) 0.07(syst)
“sin21” = 0.30 0.32(stat) 0.08(syst) A = 0.31 0.20(stat) 0.07(syst)
B0 masst distribution and asymmetry
background subtracted good tags
535MBB
hep-ex/0608039hep-ex/0608039
15714 KS
KS
KS
289 KS
KS
KS00
185 17 total
15714 KS
KS
KS
289 KS
KS
KS00
185 17 total
![Page 22: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/22.jpg)
11612 KS
KS
KS
6012 KS
KS
KS00
176 17 total
11612 KS
KS
KS
6012 KS
KS
KS00
176 17 total
mB & mmiss
instead ofmES & E
“sin2” = 0.66 0.26(stat) 0.08(syst) A = 0.14 0.22(stat) 0.05(syst) “sin2” = 0.66 0.26(stat) 0.08(syst) A = 0.14 0.22(stat) 0.05(syst)
TCPV in B0 KSKSKS
t distribution and asymmetry
347MBB
hep-ex/0607108
SS SK K K
00
SS SK K K
![Page 23: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/23.jpg)
TCPV in B0 KS
“sin2” = 0.33 0.26(stat) 0.04(syst) A = 0.20 0.16(stat) 0.03(syst) “sin2” = 0.33 0.26(stat) 0.04(syst) A = 0.20 0.16(stat) 0.03(syst)
425 28
0KS signal
425 28
0KS signal
347MBB
hep-ex/0607096
missing mass & mB
![Page 24: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/24.jpg)
TCPV in B0 KS
“sin21” = 0.35(stat) 0.08(syst) A = 0.14(stat) 0.05(syst)
“sin21” = 0.35(stat) 0.08(syst) A = 0.14(stat) 0.05(syst)
515 32
0KS signal
515 32
0KS signal
Raw symmetryB0 mass
good tags
535MBB
hep-ex/0609006hep-ex/0609006
![Page 25: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/25.jpg)
TCPV in B0 KS
“sin21” = 0.46(stat) 0.07(syst) A = 0.29(stat) 0.06(syst)
“sin21” = 0.46(stat) 0.07(syst) A = 0.29(stat) 0.06(syst)
118 18 KS signal
118 18 KS signal
B0 mass
Raw symmetry
good tags
535MBB
hep-ex/0609006hep-ex/0609006
![Page 26: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/26.jpg)
TCPV in B0 KS
“sin2” = 0.62 (stat) 0.02(syst) A = 0.43 (stat) 0.03(syst) “sin2” = 0.62 (stat) 0.02(syst) A = 0.43 (stat) 0.03(syst) +0.23
0.25
+0.250.30
142 17 KS signal142 17 KS signal
347MBB
hep-ex/0607101
0B
0B
![Page 27: Sin2 1 /sin2 via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)](https://reader037.fdocuments.net/reader037/viewer/2022103123/56649d5f5503460f94a40333/html5/thumbnails/27.jpg)
Summary
Smaller than bccs in all of 9 modes
Smaller than bccs in all of 9 modesTheory tends to predict SM contamination in positive side
Naïve average of all b s modes
sin2eff = 0.52 ± 0.052.6 deviation
Naïve average of all b s modes
sin2eff = 0.52 ± 0.052.6 deviation
More statistics crucial for mode-by-mode studies