Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2013, Vol. 24 ›› Issue (5): 050524 doi: 10.13538/j.1001-8042/nst.2013.05.024

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2012)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2012) • Previous Articles     Next Articles

Explore QCD phase transition with thermal photons  

LIU Fuming*     

  1. Instituteof Particle Physics and Key Laboratory of Quark & Lepton Physics (MOE), Collegeof Physical Science & Technology,
    Central China Normal University, Wuhan 430079,China  
  • Received:2013-06-30
  • Contact: LIU Fuming E-mail:liufm@iopp.ccnu.edu.cn
  • Supported by:

    Supported by NationalNatural Science Foundation of China (NSFC) projects (No. 11275081) and by Program for New Century ExcellentTalents in University (NCET)

     

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LIU Fuming. Explore QCD phase transition with thermal photons  .Nuclear Science and Techniques, 2013, 24(5): 050524     doi: 10.13538/j.1001-8042/nst.2013.05.024

Abstract:

This pilot study was to assess the high temperature and zero baryon density region of quantum chromodynamics (QCD) phase diagram with thermal photon emission, where the nature of QCD phase transition is ambiguous. Based on a (3+1)-D ideal hydrodynamical model to describe macroscopically the collision system, thermal photons emitted from Pb+Pb collisions at 2.76 TeV are investigated. The result reveals that photons from heavy ion collisions at high energy and centrality are possible to distinguish the structure of the hot dense matter, in QGP phase or hadronic phase, thus may provide an approach to explore the nature of this finite-temperature QCD transition (that is, first-order, second-order or analytic crossover).

Key words: Phase diagram, Hydrodynamical model, Photon emission rate