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 ›› 2003, Vol. 14 ›› Issue (1): 53

• NUCLEAR, HEAVY ION AND ATOMIC PHYSICS • Previous Articles     Next Articles

Intermediate mass dilepton production in a chemically equilibrating quark-gluon matter

HE Ze-Jun1,2, ZHANG Jia-Ju2, LONG Jia-Li2, JIANG Wei-Zhou2   

  1. 1CCAST(World Laboratory) P.O. Box 8730,Beijing 100080;
    2Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800
  • Supported by:
    Supported in part by CAS Knowledge Innovation Project No.KJCX2-N11, the National Natural Science Foundation of China No.10075071 and No.19975053, the Major State Basic Research Development Program in China under Contract No. G200077400 and CAS Knowledge Innovation Project
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HE Ze-Jun, ZHANG Jia-Ju, LONG Jia-Li, JIANG Wei-Zhou. Intermediate mass dilepton production in a chemically equilibrating quark-gluon matter.Nuclear Science and Techniques, 2003, 14(1): 53

Abstract: We find that in a chemically equilibrating baryon-rich quark-gluon matter, due to the slow cooling rate, high initial temperature, large gluon density as well as large fusion cross section of gg cc in the intermediate mass region, the gluon fusion gg→cc provides a dominant contribution to dileptons with intermediate masses, resulting in the significant enhancement of intermediate mass dileptons.

Key words: Relativistic unclear collisions, Chemical non-equilibrium, Dileptons