Few ideas on Hadronic Physics at RHICLHC Su

Few ideas on Hadronic Physics at RHIC/LHC Su Houng. Lee 1. L from pp at ALICE and H dibaryon 2. Exotics from HIC 3. Crypto-exotics from HIC Acknowledgement: S. Cho, C. M. Ko, S. Yasui + Ex. HIC collaboration 1

L from p-p ALICE and the H dibaryon 2

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L L measurement at KEK 안정근 ( E 224, E 522) A continued search for H-dibaryon (K. Imai …) 4

H –dibaryon Jaffe 77 H di-baryon 0+ u d u s d s d u s 2 SC Phase CFL Phase of color superconductivity ? H di-baryon could be bound unfortunately not found in so far 5

Expectations for H and LL production in Pb Pb collision at LHC Npart Pb+Pb: X 100 Stat : H/ L = 10 Ø If m. H < 2 m p H -2 Ø L More than 100 H dibaryon If m. H > 2 m p Can be the first observation of real p to a 30 year quest exotic and solution L L L p L 6

Exotics from HIC SHL, S. Yasui : EPJC 64 283 (09) SHL, S. Yasui, W. Liu, CM. Ko : EPJC 54 259 (08) S. Cho et al. ar. Xiv: 1011. 0852 7

Recent Highlights in Hadron Physics – Heavy quark sector Babar: DSJ(2317) 0+ Puzzle in Constituent Quark Model(2400) 1. D 0 K+ (2358) threshold effect 2. Chiral partner of (0 - 1 -) 3. Tetraquark Molecule ? D 0 D* D 1 1864 2007 2420 D 0+D* D*+D* D+D 1 D 1+D* 3871 4014 4284 4427 X(3872) , Y(4260), Z(4430) y’p Z(4051), Z(4248) cc 1 p Tetraquark ? Must contain cc ? 8

Previous Work on Multiquark hadrons - Light quark sector Scalar tetraquark (Jaffe 76) L(1405) (Weise, Oset, Jido, Sekihara. . ) Crypto-exotic : difficult to prove N Search for H dibaryon K + S p Search for Q+ pentaquark Exotic : Not found so far 9

Multiquark configuration : Ø Diquark attracation vs quark-antiquark q 1 q 3 q 2 Ø diquark picture: Yasui, Ko, Liu, Lee, . . (EJP 08, EJP 09) Type of diquark and its q-q binding S=C=0 (ud) A S=-1, ms=5/3 mu (us) 3/5 A (ds) 3/5 A C=1, mc=5 mu (uc) 1/5 A (dc) 1/5 A (sc) 3/25 A 10

Exotics 1: Tetra-quark - configurations v 2 - light quark 2 -light anitquark configuration Scalar - Tetraquark 0+ v u d d u p Meson 0 - 0 - u d d u 2 - light quark 2 -heavy anitquark configuration 0+ u d c b Tcb 0/D > O(10 0 - -5 u ) at c 0 - LHC d b 11

v Axial meson Tcc 2 - light quark 2 -heavy anitquark 1+ u d c c Tcc/D > O(10 Ø 0 - -4 ) u c 1 - d c at LHC Vertex detector: FAIR 104 D 0 /month, LHC 105 D 0/month 12

Why Di-bayron H di-baryon 0+ u d u s d d u s s H di-baryon could be bound unfortunately not found in so far 13

A new Di-baryon : Hc Hc di-baryon 0+ u d u s u d u u s u c c Hc/D > O(10 Ø Xc P -3 ) at LHC Vertex detector: FAIR 104 D 0 /month, LHC 105 D 0/month 14

Crypto Exotics from HIC (Multiquark configurations ) S. Cho (Ex. HIC collaboration) ar. Xiv: 1011. 0852 15

Normal meson, Tetraquark and Molecule Normal meson Tetraquark Molecule u Geometrical configuration u d u u Flavor quantum number ud ud u d ud 16

Statistical Model Freezeout points Normal hadron yields 17

Coalescence model : for things Success of Coalescence model with structures Coalescence model = Statistical model + overlap Suppression of p-wave resonance (Muller and Kadana En’yo) PT dependence of ratio Ko et al Quark number scaling of v 2 Ko et al v 4 Ko et al 18

Production of multiquark states from HIC ar. Xiv: 1011. 0852 1. Determine Coalescence parameter to yields of normal hadrons at RHIC 2. Using the coalescence model, calculate the yields of multiquark candidates assuming they are normal hadron, multiquark, molecule 19

S. Cho 5 x Stat Fachini [STAR] 0. 2 x Stat 20

Expectations at RHIC and LHC 21

Suppression of multi-quark states in HIC u c u D meson production through 2 -body coalescence c s d d d u c d s c d u u u s d c c u d d u s c d c c u d d u d u Tetraquark production through 4 -body coalescence Pentaquark production through 5 -body coalescence 22

Summary 1. One can search for H dibaryon from pp at LHC in ALICE and later from Pb Pb collisions end the 30 year old search. 2. One could also search for exotic multiquark states: Tcc, Hc, Qc First step towards dense matter and phase diagram of QCD 3. By measuring yields for crypto- exotic states one can identify multiquark configuration finally identify multiquark configuration 23

Back up slides 24

Running conditions at LHC Collision system √s. NN(Te. V) L 0 (cm-2 s-1) Run time (s/year) sgeom (b) pp 14. 0 1034 * 107 0. 07 Pb. Pb 5. 5 1027 106 ** 7. 7 p. Pb 8. 8 1029 106 1. 9 Ar. Ar 6. 3 1029 106 2. 7 25

Previous works on Tcc : Z. Zouzou, B. Silverstre-Brac, C. Gilgnooux, J Richard (86), D. Janc, M. Rosina (04), Y. Cui, S. L. Zhu (07) QCD sum rules: F Navarra, M. Nielsen, SHLee, PLB 649, 166 (2007) simple diquark: SHL, S. Yasui, W. Liu, C Ko EPJ C 54, 259 (2008), SHL, S. Yasui: EPJ C (09) Belle: PRL 98, 082001 (07) Can look for 1+ (Tcc) e+ e- J/y + X(3904) D D* e c c TXcc (3800) (3904) c c e+ SHL, S Yasui, W Liu, C Ko (08) 26

Production ratios for predicted Multiquarks Ø Qc production at RHIC and LHC Qc/D > 0. 74 x 10 Qc/Ds > 0. 23 x Ø -3 Hc production at RHIC and LHC Hc/D > 0. 8 x 10 Hc/Ds > 0. 25 x Ø 10 -4 -4 10 -3 Tcc production Tcc/D > 0. 34 x 10 > 0. 8 x 10 -4 -4 RHIC LHC 27

Recent data from RHIC Ncoal/Nstat 28