from hadrons to nuclei with charm and bottom flavors

From hadrons to nuclei with charm and bottom flavors

S. YasuiKEK

Baryon 10@Osaka 2010.12.7-11

Contents

1. Introduction

2. New exotic heavy hadrons New charm tetraquarks and others...

3. Charm exotic nuclei Exotic nuclei with flavors beyond strangeness

4. Experimental researches Relativistic Heavy Ion Collisions

5. Summary

Eichten in QWG 2008 Nara

Many new cc states above threshold

1. Introduction

1. Introduction

X(3872), X(3940), Y(4260), Z(4430)+, ... Yb ,...

ccd

u

Z(4430)+Y(4260)

c

cgc

cu

u

X(3872)

ccd

u

ccg hybridS. L. Zhu (2005)

Why are they exotic?- extraordinaly decay widths and branching ratios- mass difference from cc in quark model ( 〜 100 MeV)

DD* (ccuu) molecule Tornqvist (1991)

ccudreally tetraquark

ccudreally tetraquark

DD* threshold ? gluon dynamics ? something new? diquark correlation ?

Tcc1

2. New exotic heavy hadrons

Hc cuuuds

Tcc ccudΘcs cuuds

Carlson, Heller, Tjon (1988)Silvestre-Brac and Semay (1993)Manohar and Wise (1993)...Lee, SY, Liu and Ko (2008)Lee and SY (2009)

Tcc1 is „explicitly“ exotic.

ccd

u

Tcc1

Tetraquark Tcc(ccud)2. New exotic heavy hadrons

ccd

u

Tcc1

dc+

Spin-color int. sBa (a=1,..,8) induces

cc pair

cu pair

ud pair

1/mQ2

1/mQ1

1/mQ0

Tetraquark Tcc(ccud)

?

dominant attraction (3c, 3f, s=0)

further suppressed

D*-D0

uc


suppressed

ccd

u

Tcc1

dc+

Spin-color int. sBa (a=1,..,8) induces


D*-D0

uc


cc pair

cu pair

ud pair

1/mQ2

1/mQ1

1/mQ0 dominant attraction (3c, 3f, s=0)

further suppressed

suppressed

No strong decay

ccd

u

Tcc1

dc+


D*-D0

uc

B.E.

S=0

S=-1 -4 MeV

-74 MeV

Tcc1


Tcc1

scuc +


Ds*-D0

ccs

u

B.E.Tcc1

S=0

S=-1 -4 MeV

-74 MeV


Tcc1

scuc +


Ds*-D0

ccs

u

B.E.Tcc1

S=0

S=-1 -4 MeV

-74 MeV

→ Tcc1 form 3f multiplet.


sc

du u

ΘcsΛ

dus

uc

D0

+

Pentaquark Θcs(cudus)

B.E.

S=-1

S=-2 +8.4 MeV

+8.4 MeV

Θcs

→ Θcs may form 3f multiplet.


u

Dibaryon Hc(udusuc)

sc

du u

HcΛc

duc

Σ

+ suu

B.E.

S=-1

S=-2

-17.4 MeV

-17.3 MeV

Hc

a little weak,but still attractive

S=-3

-28.9 MeV


Hc

Dibaryon Hc(udusuc)

6f

2. New exotic heavy hadronsLee and SY, Eur. Phys. J. C64, 283 (2009)

Hc Hb

Dibaryon Hc(udusuc)

6f 6f


Hc Hb H’cb

Dibaryon Hc(udusuc)

6f 6f

3f


Hc Hb

Hcb

H’cb

Dibaryon Hc(udusuc)

6f 6f

3f

15f


Hc Hb

Hcb

H’cb

Hccb

Dibaryon Hc(udusuc)

6f 6f

3f

15f8f


→ Hc, Hb, H’cb, Hcb and Hccb form many multiplets!

Hc Hb

Hcb

H’cb

Hccb

Dibaryon Hc(udusuc)

6f 6f

3f

15f8f


3. Charm exotic nuclei

D nuclei

What are charm/bottom nuclei?

Nucleusproton

neutron

Charm/Bottom


Charm/Bottom

Nucleusproton

neutron

Dover-Kahana (1977)Iwao (1977)Gatto-Paccanoni (1978)Bando-Bando (1982)...

Baryons Λc, Σc, Λb, Σb, …



Nucleusproton

neutron

Charm/Bottom

Mesons hidden : ηc, J/ψ, ηb, Υ, … open : D, D*, B, B*, …



Nucleusproton

neutron

Charm/Bottom

Mesons hidden : ηc, J/ψ, ηb, Υ, … open : D, D*, B, B*, … Brodsky-Schmidt-Teramond (1990)Luke-Manohar-Savage (1992)Yokokawa-Sasaki-Hatsuda--Hayashigaki (2006)Kawanai-Sasaki (2010)...



Nucleusproton

neutron

This is our subject!

Charm/Bottom

Mesons hidden : ηc, J/ψ, ηb, Υ, … open : D, D*, B, B*, …



N

D (B)

??

Q. What is the interaction between D (B) and N ?


NK

K N

SU(3)

ND

D N

NB

B N

Weinberg-Tomozawa

SU(4) SU(5)

Lutz-Kolomeitsev (2004), Hoffmann-Lutz (2005), Mizutani-Ramos (2006), Gamermann-Oset-Strottman-Vacas (2007), Haidenbauer-Krein-Meissner-Sibirtsev (2007), Tolos-Molina-Gamermann-Gracia-Reico-Nieves-Oset-Ramos (2010) ...

Strangeness, Charm, Bottom, ...


D BK

K*

D*B*

400 MeV

140 MeV 45 MeV

D* and B* are new ingredients!

Chiral Symmetry Heavy Quark Symmetry

500 MeV 1870 MeV 5280 MeV

K* is almost irrelevant in dynamics.

pseudo-scalar

vector



NK

K N

p, ω, ρ

Weinberg-Tomozawa One pion exchange potential (OPEP)

ND(*)

D(*) N

NB(*)

B(*) N

One pion is absent.(short range force)

One pion is present. (long range force)

KN interaction D(B)N interaction

p, ω, ρ p, ω, ρ



S. Y. and K. Sudoh, PRD80, 034008 (2009)

with

G. Burdman and J.F. Donoghue (1992)M.B. Wise (1992)T.-M. Yan, H.-Y. Cheng, C.-Y. Cheung, G.-L. Lin, Y.C. Lin and H.-L. Yu (1997)

vector + pseudoscalar

One pion exchange potential (OPEP)

Heavy Quark Symmetry

D(*)

D(*)

N

N

OPEP

p, ω, ρ

P=D, B

S. Y. and K. Sudoh, PRD80, 034008 (2009)


N

D (B)

??

Q. Are there bound states of D (B) and N ?

D(cq)-N(qqq)B(bq)-N(qqq) * No annihilation process


JP=1/2-, I=0

strong tensor coupling

wave functions obtained by variational method

DN (2S1/2)

D*N (4D1/2)

D*N (2S1/2)

PRELIMINARY RESULTS

OPEP+ contact int.


JP=1/2-, I=0

strong tensor coupling

wave functions obtained by variational method

DN (2S1/2)

D*N (4D1/2)

D*N (2S1/2)

DN π +cont.A +cont.B B.E. [MeV] 10.8 6.6 8.2 r [fm] 1.7 2.1 1.9

PRELIMINARY RESULTS

OPEP+ contact int.


BN bound state170 MeV

KN (pentaquark?)

threshold

100 MeV

cqqqq bqqqqsqqqq

Strangeness Charm Bottom

DN bound state

|DN; I=0> = |D-p> + |D0n> + |D*-p> + |D*0n>

K+ π - π - pweak decay D*→Dπ is closed.

DN and BN bound states JP=1/2- (I=0)

10 MeV


K + N D + N B + N

Λ(1405)

KN

πΣ

1433 MeV

1330 MeV

ΞN

ΛΛ

2255 MeV

2230MeV

H dibaryon

BN6217 MeVBN state

DN2807 MeV

DN stateB.E. 170 MeV

B.E. 10 MeV


Λ(1405)

KN

πΣ

1433 MeV

1330 MeV

ΞN

ΛΛ

2255 MeV

2230MeV

H dibaryon

BN6217 MeVBN state

DN2807 MeV

DN state

K nuclei

Hypernuclei

Charm/Bottom nuclei

B.E. 170 MeV

B.E. 10 MeV


A=2 charmed (bottom) nucleus ?

D (B)

NN

Q. Are there exotic nuclei with D (B) ?


DNN and BNN systems


JP=1-

I=1/2

I=3/2

I=1/2

I=3/2

|D(NN)S=0,I=1> + |D*(NN)S=1,I=0>

|D(NN)S=0,I=1>


|D(NN)S=0,I=1>

3/4 1/4

0

1/4 1/6 1/4

0

Fraction of (D(*)N)S=1/2,I=0

D(*)

NN

S=1/2I=0

S=1/2I=0


S. Y. and K. Sudoh,PRD80, 034008 (2009)

DNN and BNN systems


JP=1-

I=1/2

I=3/2

I=1/2

I=3/2

|D(NN)S=0,I=1> + |D*(NN)S=1,I=0>

|D(NN)S=0,I=1>


|D(NN)S=0,I=1>

3/4 1/4

0

1/4 1/6 1/4

0

Fraction of (D(*)N)S=1/2,I=0

D(*)

NN

S=1/2I=0

S=1/2I=0

weak decayK+ π- π- + p + p

weak decay K+ π- π- + d

Cf. D- → K+ π- π-


S. Y. and K. Sudoh,PRD80, 034008 (2009)

4. Experimental researches

Relativistic Heavy Ion Collisions

Relativistic heavy ion collisions as sources of multi-particles


Nucleus Nucleus

RHIC/LHC



Nucleus Nucleus

QGP

RHIC/LHC



Hadron phase

QGP

RHIC/LHC

p, Λ, ...

π, K, ...

f0, a0, ...

Λ3H

Exotics?

STAR (2003)

STAR (2010)



Hadron phasep, Λ, ...

π, K, ...

f0, a0, ...

Λ3H

Exotics?

STAR (2003)

STAR (2010)

RHIC/LHC



yields of hadrons from heavy ion colisions

ExHIC (Exotics from Heavy Ion Collisions) collaborationS. Cho (Yonsei U.), T. Furumoto (YITP and RIKEN), T. Hyodo (Tokyo Inst. Technology), D. Jido (YITP), C.-M. Ko (Texas A&M U.), S. H. Lee (Yonsei U. and YITP), M. Nielsen (U. de Paulo), A. Ohnishi (YITP), T. Sekihara (YITP and Kyoto U.), K. Yazaki (YITP and RIKEN), S. Y. (KEK)

S. Cho et al. (the ExHIC collaboration), arXiv:1011.0852 [nucl-th]



Normal hadron0.2

1

Hadron molecule

Multi-quark



Normal hadron0.2

1

Hadron molecule

Multi-quark


More details→ Ohnishi-san‘s talk on Friday!!

CERN, 2 Dec. 2010 J. Schukraft


5. Summary

・ Exotic charmed hadrons are interesting !

・ New exotic charmed hadrons Tcc, Θcs, Hc, ...

・ Charm exotic nuclei D-meson nuclei

・ Experimetal researches Belle, J-PARC, GSI, RHIC/LHC, ...

from hadrons to nuclei with charm and bottom flavors

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