Post on 22-Feb-2016
description
1
Su Houng Lee 1. Hadrons with one heavy quark 2. Multiquarks with one heavy quark 3. Quarkonium
Arguments based on two point function can be generalized to higher point function
Hadron Physics with Heavy quarks
2
QCD
Chiral sym-metry break-
ing
Confinement
Phenomenol-ogy
One heavy quark
Two heavy quark
Heavy quark
3
1. Hadrons with one heavy quark
4
Heavy quark propagator
mqqS
1)( where,...........)()()()( qSGqSqSqSG
Perturbative treatment are possible because
0for even qqm QCD
q
•
hh 2
121 Gm
5
..),(
............
......Tr0,)(
2
1
0
222
kmn
kmn
GmqLp
dxdp
Gpmqp
dplhqhlq
Perturbative treatment are possible when
222 1),( QCDxmqxxmqL
q
p
qp
which breaks down at x=0 due to light quark propaga-tor
One Heavy quark and one Light antiquark
6
n
Gh
mq
mqmqGG
qShqhq
22..
........
0,)(
Contribution from light quark condensate
222 QCDqm
q
qp
q
converges for large
7
.... 0,0, 2255
h
hiqx
mqm
hxhihxhidxe
Chiral order parameters
D(1870) D(2400)
qqm
qicxciqxdqcxcqxdc
mc2 )0(),()0(),( 5544
),(),( 0
s
msmsds DD
),( 0Dms ),( Dms
8
• Direct observation of chiral symmetry restoration in medium
D(1870) 0-
D(2400) Belle
G > 200 MeV
0+
D 0qq
..0
)3.0 to2.0(1mn
qqqq
Hayashigaki (00)
Weise, Morath, Lee (99)
Generalization to other channels: Kampfer et a. (10), Mishra et.al., Z. Wang
• QCD sum rule approach: Hayashigaki, Weise, Morath, Lee
9
..12
1........
0,)(
0
022.. G
GG
G
GGGG
kmq
mqmqGG
qShqhq
n
Gh
but no convergence model approach
Heavy quark symmetry
ii
ki
ki
0
05
0
05 12
112
1
ii ik
ik
5
0
05
0
0 12
1112
11
D D*
D0 D0
near mass shell kmvq
10
Qq quark system in vacuum and medium: Chiral symme-try
D(1870)
0-
D(2400)2318 ?
0+
D*(2007)
1-
D1(2420)
1+
Ds(1968)
Ds(2317)
D*(2112)
Ds1(2460)
530448 ?
413 349348
0- 0+ 1- 1+
137 144
xxx? 396xxx 345
B(5279)
B(57xx)?
B*(5325)
B1(5721)
Bs(5366)
Bs(58xx)?
Bs*(5415)
Bs1(5830)
4646
11
2. Multiquarks with one heavy quark
1. Some introduction with diquarks
2. Possible multiquark states
12
Babar: DSJ(2317) 0+ Puzzle in Constituent Quark Model(2400)
1. D0 K+ (2358) threshold effect
2. Chiral partner of (0- 1-)
3. Tetraquark
X(3872) G<10 MeV , Y(4260), Z(4430) G<50 ’ Z(4051),Z(4248) cc1 Zb(10610), Zb(10650) U
molecule ?
D0 D* D11864 2007 2420
D0+D* D*+D* D+D1 D1+D*3872 4014 4284 4427
B0 B* B15279.5 5325.1 5721
B0+B* B*+B* B+B1 B1+B*10604.6 10650.2 11000.5 11046.1
Belle
Recent highlights on Multi-quark hadrons –heavy quark sector
13
Normal meson
Tetraquark Molecule
Geometri-cal config-
uration
Flavor quantum number
ud ud ud
u uudu
d
uu
ud
Navara, Nielsen, SHLee Phys Rept (11)
Normal meson, Tetraquark and Molecule
14
Color spin interaction (De Rujula, Georgi, Glashow..)
q1 q2 q4
Diquark vs. quark-antiquark configurations
Color Spin Flavor D
Q-Q 3bar 0 3bar -2
1 6 2/3
6 0 6 1
1 3bar -1/3
Color Spin Flavor D
Q-Qbar 1 0 1,8 -4
1 1,8 4/3
8 0 1,8 1/2
1 1,8 -1/6
q2
Djj
aj
aiji ss
Diquark attracation vs quark-antiquark
2121
1mm
ssCB
q3q1
q2
3131
1mm
ssCM
BM CC 3
15
Recently observed states with hidden heavy quark Yasui
Most probably molecular state NOT tetraquark
jj
aj
aiji
jig ss
mmH
1q3q1
c c
q3
q1 c
c
q3q1
cc
q3q1
c c
D D* D1
D*X(3872)
Z(4430)
16
Diquark attracation vs quark-antiquark
2121
1mm
ssCB
q3q1
q2
diquark picture: Yasui, Ko, Liu, Lee,.. (EJP08,EJP09)
Type of diquark and its q-q binding S=C=0 (ud) A S=-1, ms=5/3mu (us) 3/5 A (ds) 3/5 AC=1, mc=5mu (uc) 1/5 A (dc) 1/5 A (sc) 3/25 A
MeV 14543A 2
u
B
mC
3131
1mm
ssCM
BM CC 3
23 3 make mm
Multiquark configuration –Yasui, Ko, Liu, Lee (08,09)
q3
17
1+ u d c c u dc c 0- 1-)cc(udT1cc
22 41
43
c
B
u
B
mC
mC
cu
M
cu
M
mmC
mmC
41
43
- Binding against decay = - 79.3 MeV
• A picture of c (K.Kim, D. Jido, SHL)
u d c
43
2u
B
mC
Tetra-quark
• A Tetraquark
18
u d 0+
) Oka (M. repulsion Instanton MeV 29Binding H
u s
d s
u d
s
u d
s
H di-baryon
su
B
u
B
mmC
mC
432
43
2
22 43
43
u
B
u
B
mC
mC
Di-baryon (conf 1) – (qq)(qq)(qq)
19
u d
0+
MeV 92Binding H c
u s
Hc di-baryon
u c
u d
u
u
c
s
Hc di-baryon P Xc
cu
B
su
B
u
B
mmC
mmC
mC
43
43
43
2
su
B
u
B
mmC
mC
43
43
2
X
Kpp
ppK
c
c
)(
)( (udusuc)H 0c
mc 132
Di-baryon (conf 2) – (qq)(qq)(qQ)
20
3. Quarkonium
21
..),(
............
......Tr0,)(
2
1
0
222
kmn
kmn
GmqLp
dxdp
Gqpmp
dplhqhlq
Perturbative treatment are possible when 2222 412),( QCDqmqxmqL
2q
System with heavy quark anti-quark
p
qp
222 4 QCDqm
22
q2 process expansion parameter example
0 Photo-production of open charm
m2J/
> 0 Bound state properties
Formalism by Peskin (79)
J/ dissociation: NLOJ/ mass shift: LO
-Q2 < 0 QCD sum rules for heavy quarks
Predicted mhc <mJ/ before experiment
Perturbative treatment are possible when 222 4 QCDqm
2
2
4mQCD
22
2
4 QmQCD
2/
2
2
4 J
QCD
mm
0/
2
2
J
QCD
mm
23
n
nQCDn
nnn
FGqxqm
xqFdxq
..)12(4
),(...)(2222
21
0
2/
2Jmq
Subtlety for bound states Applequist, Dine, Muzinich (78), Peskin (79), Basis for pNRQCD ........
)1( ))()((
)(2244
3242 O
mgmgmgmgmgg
c
c
c
c=
42 1 ,1 , mgt
mga
pm
Separation scale
24
qc
c
OPE for bound state: m infinity
)( || ),( 16/ 24220 mgOkmgOgNm c
Mass shift: QCD 2nd order Stark Effect : Peskin 79 e > L qcd
DMedium
220
6
2/3
0
20
2/1
)1(9128 E
maxxxdxamJ
Attractive for ground state
Separation scale
For small T modify matrix el-ement
25
Summary of analysis of Stark effect+ QCD sum rule (Morita-Lee)
• Due to the sudden change of condensate near Tc
</ B2
>T
</ E2 >T
G0
G2
• Abrupt changes for mass and width near Tc
(GeV)/JmD
26
NN
NN
N
mxdxxGmG
mGm
0.9 ),(2
MeV 750 N|(Chiral)T|N ,N|Op|N2
Op Op
22
000
D
• Linear density approximation
• Condensate at finite density
n.m.0
000 0.061-1
98
GmGG N
Tc
2
0
2
5
2 0.7 ..
GGGmn
• At r = 5 x r n.m.
167.0 2.0
167.0 2.0
2
2
D
D
s
s
B
E
9.02
sG
Operators in at finite density and hadronic phase
27
• QCD sum rule for Quarkonia at nuclear matter: Klingl, Kim, SHL,Weise (99), Hayashigai (99)
• Contribution from complete dim 6 operators: Kim SHL (01)
mass shift at nuclear matter: -7 MeV (dim 4) -4 MeV (dim4+ dim6)
• QCD sum rule + MEM at finite temperature: Gubler, Oka, Morita
QCD sum rule for Quarkonia in medium
• looking forward to further work
28
W(S-T)=exp(-s ST)
Time
Space
Space
SW(S-T) = 1- </ E2> (ST)2 +..
W(S-S) = 1- </ B2> (SS)2 +..
OPE for Wilson lines: Shifman NPB73 (80)
<E2>, <B2> vs confinement potential
• Local vs non local behavior
W(S-S)= exp(-s SS)
T
• Behavior at T>Tc
W(SS)= exp(-s SS)
W(ST)= exp(- g(1/S)T)
</ B2
>T
</ E2 >T
29
SU(3) Gauge Boyd (1996)
2+1 HotQCD (2012)
Behavior near Tc
30
rrrrV s s )(
34)(
)(GeV 2s
small s
r
b decdec /)0()( TTTT ss
dec/TT
T/Tc
sString Tension: QCD order pa-rameter
Early work on J/y at finite T (Hashimoto, Miyamura, Hirose, Kanki)
31
Chiral sym-metry break-
ing
Confinement
JPARCOne heavy
quark
Two heavy quark
Heavy quark
Analytic approaches
Lattice calculation
32
1. Hadrons with one heavy quark (D, …) in medium can give new insight into chiral symmetry restoration
a) nuclear target ? Heavy ion at JPAR b) Lattice calculation
Summary
2. Molecules are interesting. Flavor exotic multiquark states will exist in the heavy sector
a) From B decay b) From JPARC
3. Quarkonium in medium will give new insights into confinement prob-lem
33
S=C=0 (ud) -AS=-1, ms=5/3mu (us) -3/5 A (ds) -3/5 AC=1, mc=5mu (uc) -1/5 A (dc) -1/5 A (sc) -3/25 A
MeV 14543A 2
u
B
mC
u d
A- A-
1/2+
s
MeV 487MeV '468A54Binding
u d
L=1
u d su
d
A- A59-
MeV 46823
)1670()1520(2 2*]2/1[
*]2/3[
I
LL2 contribution
- 500 MeV
in Five body quark model by Hiyama, Hosaka et al (06)
+
P K
+ (Jaffe Wilczek) in a naïve quark model
Multiquark configuration –Yasui, Ko, Liu, Lee (08,09)