| Original Articles |
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Chemical Equilibration and Dilepton Production of Quark-Gluon Plasma at RHIC Energies |
| LONG Jia-Li1;HE Ze-Jun1,2;MA Guo-Liang1;MA Yu-Gang1;LIU Bo3 |
| 1Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, PO Box 800-204, Shanghai 201800
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
3Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039 |
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| Cite this article: |
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LONG Jia-Li, HE Ze-Jun, MA Guo-Liang et al 2004 Chin. Phys. Lett. 21 47-50 |
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Abstract An evolution model of the chemically equilibrating quark-gluon plasma system has been established based on the Jüttner distribution function of partons. By studying the dilepton production of the system, we find that due to high initial temperature, a dominant contribution to dileptons with intermediate masses is provided by gluon density of the system as well as large gluon fusion gg → cc cross section in the intermediate mass region, quark--antiquark annihilation qq → ll and, especially, thermal charmed quarks from the gluon fusion gg → cc and quark--antiquark annihilation qq → cc.
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| Keywords:
25.75.-q
12.38.Mh
24.85.+p
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Published: 01 January 2004
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| PACS: |
25.75.-q
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(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
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12.38.Mh
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(Quark-gluon plasma)
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24.85.+p
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(Quarks, gluons, and QCD in nuclear reactions)
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