Thermal Charmed Quark Contribution to Dileptons in Chemically Equilibrating Quark-Gluon Matter
HE Ze-Jun1,2,3, LONG Jia-Li2, LU Zhao-Hui2, MA Yu-Gang2, LIU Bo4
1CCAST (World Laboratory), PO Box 8730, Beijing 100080
2Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, PO Box 800-204, Shanghai 201800 %(mailing address)
3Research Center of Nuclear Theory of National Laboratory of Heavy-Ion Accelerator, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
4Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
Thermal Charmed Quark Contribution to Dileptons in Chemically Equilibrating Quark-Gluon Matter
HE Ze-Jun1,2,3;LONG Jia-Li2;LU Zhao-Hui2;MA Yu-Gang2;LIU Bo4
1CCAST (World Laboratory), PO Box 8730, Beijing 100080
2Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, PO Box 800-204, Shanghai 201800 %(mailing address)
3Research Center of Nuclear Theory of National Laboratory of Heavy-Ion Accelerator, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
4Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
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.
HE Ze-Jun;;LONG Jia-Li;LU Zhao-Hui;MA Yu-Gang;LIU Bo. Thermal Charmed Quark Contribution to Dileptons in Chemically Equilibrating Quark-Gluon Matter[J]. 中国物理快报, 2003, 20(6): 836-838.
HE Ze-Jun, , LONG Jia-Li, LU Zhao-Hui, MA Yu-Gang, LIU Bo. Thermal Charmed Quark Contribution to Dileptons in Chemically Equilibrating Quark-Gluon Matter. Chin. Phys. Lett., 2003, 20(6): 836-838.
2003, Vol. 20 
