Dileptons from a Chemically Non-equilibrated Quark-Gluon Plasma

  • The evolution and dilepton production of a chemically equilibrating quark-gluon plasma system at finite baryon density have been studied. It was found that due to the increase of the quark phase life-time with increasing initial quark chemical potential, and other factors like higher initial temperature, larger gluon density and gluon fusion or quark annihilation cross section, thermal charmed quarks provide a dominant contribution to dilepton yield. This results in a significant enhancement of intermediate mass dilepton production.
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LONG Jia-Li, HE Ze-Jun, JIANG Wei-Zhou, MA Yu-Gang and LIU Bo. Dileptons from a Chemically Non-equilibrated Quark-Gluon Plasma[J]. Chinese Physics C, 2004, 28(4): 387-391.
LONG Jia-Li, HE Ze-Jun, JIANG Wei-Zhou, MA Yu-Gang and LIU Bo. Dileptons from a Chemically Non-equilibrated Quark-Gluon Plasma[J]. Chinese Physics C, 2004, 28(4): 387-391. shu
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Received: 2003-06-12
Revised: 1900-01-01
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Dileptons from a Chemically Non-equilibrated Quark-Gluon Plasma

    Corresponding author: HE Ze-Jun,
  • Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China2 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China3 Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100039,China

Abstract: The evolution and dilepton production of a chemically equilibrating quark-gluon plasma system at finite baryon density have been studied. It was found that due to the increase of the quark phase life-time with increasing initial quark chemical potential, and other factors like higher initial temperature, larger gluon density and gluon fusion or quark annihilation cross section, thermal charmed quarks provide a dominant contribution to dilepton yield. This results in a significant enhancement of intermediate mass dilepton production.

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