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Theoretical hadron physics @ Yonsei

Theoretical hadron physics @ Yonsei. Group members. Professor : Su Houng Lee. Postdoc : Sungtae Cho. Ph.D Course : Kyung-il Kim, Woosung Park. M.S. Course : Hyojin Park, Kiesang Jeong Hyejin Kim. Outline.

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Theoretical hadron physics @ Yonsei

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  1. Theoretical hadron physics@ Yonsei Group members Professor : Su Houng Lee Postdoc : Sungtae Cho Ph.D Course : Kyung-il Kim, Woosung Park M.S. Course : Hyojin Park, Kiesang Jeong Hyejin Kim K.I.Kim

  2. Outline • Heavy quark system in quark-gluon plasma • Exotic hadrons • AdS/QCD approaches to dense matter • Summary K.I.Kim

  3. Heavy quark system in quark-gluon plasma K.I.Kim

  4. Quark-Gluon Plasma What is the quark-gluon plasma(QGP)? K.I.Kim

  5. T< 1.6 Tc T> 1.6 Tc J/y peak at 3.1 GeV J/Ψ Suppression 1986: Matsui and Satz claimed J/y suppression is a signature of formation of Quark Gluon Plasma in Heavy Ion collision Quenched lattice calculation by Asakawa and Hatsuda using MEM K.I.Kim

  6. * Bethe-Salpeter Equation Heavy bound state 1951 : Salpeter & Bethe kernel Bound State of Charmonium

  7. * LO result quark gluon

  8. Exotic Hadrons K.I.Kim

  9. Exotic hadrons <Exotic Hadrons?> Pentaquark Tetraquark q q q q q q q q q K.I.Kim

  10. Stable Multiquark configurations in a schematic diquark model SHLee and S.Yasui : EPJ C (2009) <Diquark inside baryons> K.I.Kim

  11. <Quark-antiquark inside mesons> Quark-antiquark interaction is 3 times stronger than diquark interaction. K.I.Kim

  12. Stable mutiquark configuration <Heavy Tetraquark> q u q Vs. u q d d q K.I.Kim

  13. QCD Sum Rule The two point correlation function, A narrow resonance approximation Ex) The Borel Transformation K.I.Kim

  14. QCD sum rules X(3872): SHL, K. Morita, M. Nielsen (PRD08) • J=[s][V] Tetraquark current vs. J=DD* Molecular current Small width <2 MeV

  15. Cont- Z(4430) : SHL, K. Morita, M. Nielsen (PRD08) • J=D1 D* Molecular current width = 40 MeV

  16. AdS/QCD approaches to dense matter K.I.Kim

  17. AdS/QCD ? <Whatis the AdS/QCD approach?> AdS/CFT : J.M. Maldecena (1998) Correspondence between strongly interacting gauge theory And weakly interacting super gravity. <AdS/CFT Dictionary> K.I.Kim

  18. AdS5 Background and Hardwall Model <AdS Backgrond> <Hardwall Model> z UV IR AdS5 space is compactified such that K.I.Kim

  19. Nucleons in Finite Densities The effective action for nucleons, The expectation value of field X, The equation of motion is given by

  20. The Chemical Potentials Domokos and Harvey, Phys.Rev.Lett.99:141602,2007 Solving the vector field equation of motion at zero momentum yields must be proportional to the quark chemical potential The Euclidean action is equal to the grand canonical potential In generalized gauge symmetry to

  21. Nucleon Mass and Quark Condensate

  22. Summary • Theoretical hadron physics group in Yonsei is interested in heavy quark system in QGP and exotic hadrons. • Using QCD spectral sum rule and AdS/QCD approaches we have studied hadron physics. K.I.Kim

  23. Thank you !! K.I.Kim

  24. Back-up Slides K.I.Kim

  25. RHIC and LHC The Relativistic Heavy Ion Collider (RHIC) is a heavy-ioncollider located at and operated by Brookhaven National Laboratory (BNL) in Upton, New York The Large Hadron Collider (LHC) is a particle accelerator located at CERN, near Geneva, Switzerland. It lies in a tunnel under France and Switzerland. LHC K.I.Kim

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