Physics Opportunities with heavy quark system at FAIR Su Houng Lee Yonsei Univ., Korea Introduction to FAIR Heavy quark system in nuclear medium Heavy exotics from heavy Ion collision Summary HHL-07 SHLee

Introduction to FAIR Facility for Antiproton and Ion Research at GSI HHL-07 SHLee

FAIR CBM 2-35 GeV Heavy Ion (Gold) projectile QCD phase diagram at high baryon density 2. PANDA: anti proton project (1-15 GeV) charmonium sprectroscopy, origin of hadron mass HHL-07 SHLee

Heavy quark system in nuclear medium Physics with antiproton beam HHL-07 SHLee

QCD Vacuum Nuclear matter Similarly, there will be changes for the light quark condensate. However, let us concentrate on the gluon field configuration, because that is what the Heavy quark system is sensitive to. Partial Chiral symmetry restoration in nuclear matter  Could be probed by light vector mesons HHL-07 SHLee

From Volker Metag’s recent talk Shocking result !! New structure appearing? HHL-07 SHLee

QCD Vacuum Nuclear matter Similarly, there will be changes for the light quark condensate. However, let us concentrate on the gluon field configuration, because that is what the Heavy quark system is sensitive to. Change of gluonic background in nuclear matter  could be probed by heavy quark system HHL-07 SHLee

Why Heavy Quark system can probe this gluonic change 1. Heavy quark propagation Perturbative treatment are possible because HHL-07 SHLee

2. System with two heavy quarks Perturbative treatment are possible when HHL-07 SHLee

q2<0: QCD sum rules for charmonium (cc) 3090 3000 3400 3500 3570 HHL-07 SHLee

Heavy quark propagator is sensitive to only gluon fields and therefore the mass of heavy quark system will change in nuclear medium HHL-07 SHLee

Approaches for charmonium mass shift in nuclear matter Quantum numbers QCD 2nd Stark eff. Potential model QCD sum rules Effects of DD loop Hc 0-+ –8 MeV –5 MeV (Klingl, SHL ,Weise) No effect (SHL, Ko) J/y 1-- (Peskin, Luke) -10 MeV (Brodsky et al). –7 MeV <2 MeV c0,1,2, 0,1,2++ -40 MeV (SHL) -60 MeV No effect on c 1 y(3686) -100 MeV < 30 MeV y(3770) -140 MeV HHL-07 SHLee

Such experiment can be done at 1. GSI future accelerator facility ⇒ anti proton project (1-15 GeV) HESR HHL-07 SHLee

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Anti proton project at GSI Heavy nuclei Anti proton will be absorbed at surface and Charmonium will decay inside the heavy nuclei HHL-07 SHLee

Production rate: J/y 1-- y(3686) y(3770) c0 0++ c1 1++ c12 JPC Mass shift Final state s to final state Events per day J/y 1-- –8 MeV e+ + e- 6 pb 100 y(3686) –100 MeV 0.6 pb 10 y(3770) -100 MeV 1 pb 17 c0 0++ -50 MeV J/y + g 200 pb 3400 c1 1++ 80 pb 1360 c12 350 pb 5950 HHL-07 SHLee

Charmonium spectrum HHL-07 SHLee

Similar to discoveries in E&M Pieter Zeeman (1865-1943) Johannes Stark (1874-1957) Zeeman effect: Nobel prize 1902 Stark effect: Nobel prize 1919 Beginning of the Femtophysics era HHL-07 SHLee

Heavy exotics from Heavy Ion collision Physics with CBM HHL-07 SHLee

Attractions in quark-antiquark vs. diquark One gluon exchange Lattice calculation Phenomenological fit to hadron spectrum color spin interaction HHL-07 SHLee

Color spin interaction explains hadron spectrum Nucleon Baryon Mass difference Meson Mass difference Works very well with 3CB=CM = constant HHL-07 SHLee

When will a pentaquark form ? d d u q u d Weak quark-antiquark attraction Strong quark-antiquark attraction q u d s c Epentaquark-Emeson-Baryon= -50MeV HHL-07 SHLee

When will a tetraquark form ? d b Strong quark-antiquark attraction Weak quark-antiquark attraction u d c Etetraquark-E2-meson= +38 MeV u a s a b b d HHL-07 SHLee

Success of statistical model P. Braun-Munzinger, J. Stachel (95 …) HHL-07 SHLee

Exotic particle production: elementary vs HIC Exotic particle production from elementary processes Exotic particle production from Heavy Ion collision N=c exp(-mQ/T) QGP u u u u c c d d d d HHL-07 SHLee

Possible Decay mode of charmed Pentaquark exotic Decay mode Final states Branching ratio udusc uds(L) +uc(D0) L + k0 p0 (k+ p-) L + k0 p- p+ 2.3 % (3.8 % ) 5.97 % uud(p) +sc (Ds-) P + k0 p- P + k+ p- p- 2.82 % 9.2 % ududc udu (p)+dc (D-) udd (n)+uc (D0) n + k0 p0 (k+ p-) n + k0 p- p+ HHL-07 SHLee

Rough estimate of events at RHIC Qc u u c d d Final state Decay mode Final states Branching ratio ududc udu (p)+dc (D-) p + k0 p- P + k+ p- p- 2.82 % 9.2 % udd (n)+uc (D0) n + k0 p0 (k+ p-) n + k0 p- p+ 2.3 % (3.8 % ) 5.97 % Central collision (0-10%) dNcc/dy = 2.2 (phenix) HHL-07 SHLee

Possible Decay mode of Tetra-quark exotic Decay mode Final states Branching ratio uscc uc (D0)+sc (Ds-) D0 (k0 p0 , k+ p-k0 p- p+ ) Ds-(k0k- , k-k+ p-) 3.6 % ( 4.4 %) udcc dc (D-)+uc (D0) D- (k0 p-l k+ p- p- ) + HHL-07 SHLee

If STAR can do it, CBM can do much better 4 month Au+Au at 25 AGeV CBM HHL-07 SHLee

And also at LHC (W.Liu, C.M.Ko, SHL 07) udud c ud cc HHL-07 SHLee

Summary From PANDA (anti proton beam), can look at the charmonium mass shift in nuclear medium  Beginning of Femto Physics Hint to confinement and QCD vacuum From CBM (heavy Ion Physics), can look at heavy Exotics  New exotic hadron in QCD If found the first real exotic ever, will tell us about QCD and dense matter  color superconductivity HHL-07 SHLee

4 month Au+Au at 25 AGeV CBM HHL-07 SHLee

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q2 process expansion parameter negative m2J/ y > 0 Perturbative treatment are possible when q2 process expansion parameter negative QCD sum rules for heavy quarks Photo production of open charm m2J/ y > 0 Dissociation cross section of bound states HHL-07 SHLee

Example: from Volker Metag’s recent talk Shocking result !! New structure appearing? HHL-07 SHLee