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Hard and Soft Probes of Dense Matter

Hard and Soft Probes of Dense Matter. HNPC2013, Zhang Jia Jie , China, 18-22 July 2013. Xin-Nian Wa ng 王新年 Central China Normal University. QCD: Theory for strong interaction. SU(3) gauge symmetry (non- Abelian ) Asymptotic freedom at short distance Confinement at long distance

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Hard and Soft Probes of Dense Matter

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  1. Hard and Soft Probes of Dense Matter HNPC2013, Zhang JiaJie, China, 18-22 July 2013 Xin-Nian Wang 王新年 Central China Normal University

  2. QCD: Theory for strong interaction • SU(3) gauge symmetry (non-Abelian) • Asymptotic freedom at short distance • Confinement at long distance • Chiral symmetry and its spontaneous breaking • Goldstone boson and chiral condensate • Scale and UA(1) anomaly • ….

  3. Phase structure of QCD Matter

  4. EOS from lattice QCD Fodor et al. 2006 (Wuppertal-Budapest) At T ~ 5Tc, e still 80% of the Stefan-Boltzmann value: quasi-particle modes at high T

  5. QGP in heavy-ion collisions High T, m confinement De-confinement nucleus quark-gluon plasma (QGP) RHIC LHC

  6. Properties of QGP in A+A Collisions • EM emission: Medium response • to EM interaction g production, J/Y suppression • Hard probes: Medium response to strong interaction Jet quenching • Soft probes: Bulk properties of medium • collective flow Dynamic System:

  7. Hard and soft probes Pb-Pb pp reference hard probes soft probes

  8. Jet Transport in Medium k Liang, Zhou & XNW 2008 .... Color Lorentz force Multiple scattering Transverse momentum broadening: Jet radiative energy loss: Guo & XNW’00 Jet transport coefficient: pQCD(BDMPS’96) AdS/CFT (Liu,Rajagopal &Wideman’06) lattice QCD (Majumder’12)

  9. Jet Quenching phenomena at RHIC STAR Preliminary Pedestal&flow subtracted

  10. Jet transport coefficient Chen, Greiner, Wang, XNW, Xu（2010） RHIC from DIS Deng &XNW 2010

  11. Jet quenching at LHC Chen et al 2012 Muller, Schukfrat & Wyslouch 2012

  12. Dijet asymmetry at LHC

  13. Dijet asymmetry at LHC Qin & Muller’ 2012 He, Vitev & Zhang’ 2012

  14. Gamma-jet asymmetry XNW & Zhu’13 LBT ATLAS Rapid expansion & recoiled parton 1.0

  15. Collective flow of QGP • Hydrodynamic: • a low-momentum effective theory • Inputs from first principle QCD (lattice QCD)EoSp(e), transport coefficients x(T), z(T) (??) • Initial condition: parton prod. & thermalization

  16. Transport properties of QCD matter Arnold, Moore & Yaffe 2003 pion gas Prakash’93 Bluhm, Kampfer & Redlich2010 AdS/CFT Lattice QCD: Nakamura & Sakai 2005; Meyer 2007

  17. Initial conditions for hydro 2D fluctuating geometry: MC- Glauber, MC-KLN 2D fluctuating geometry + QM: IP-Glasma 3D fluctuating geometry +QM: HIJING, AMPT, NeXus MC (3+1)D ideal hydro with AMPT initial condition (Pang & XNW 2012) y h x x

  18. Anisotropic flow of QGP Little Bang Big Bang

  19. Effects of tran. & long. fluctuations Pang & XNW 2012 No fluct Trans. only Full fluct Dh>2.5

  20. Viscosity of QGP in A+A collisions Heinz & Song 2010 Gale, Jeon, Schenke, Tribedy & Venugopalan 2013 Fluctuation + viscous hydro required to fit all vn Viscosity at LHC is larger than at RHIC

  21. Summary Hard probes and anisotropic flows provide unprecedented constraints on the transport properties of the sQGP in A+A Future: mapping out T-dependence at RHIC & LHC Bluhm, Kampfer & Redlich 2010 RHIC AdS/CFT Majumder, Muller & XNW 2007

  22. Hydro dynamics of dense matter cS EOS of QGP

  23. Phase structure of QCD matter Fluctuation and Tc

  24. Quark number scaling of v2 STAR:Phys. Rev. Lett. 92, 052302(04) Anisotropic flow n: valence quark

  25. Hard probes of dense matter Jet quenching via parton energy loss

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