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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 |
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| Cite this article: |
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HE Ze-Jun, LONG Jia-Li, LU Zhao-Hui et al 2003 Chin. Phys. Lett. 20 836-838 |
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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.
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| Keywords:
25.75.Nq
12.38.Mh
24.10.Nz
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Published: 01 June 2003
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| PACS: |
25.75.Nq
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(Quark deconfinement, quark-gluon plasma production, and phase transitions)
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12.38.Mh
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(Quark-gluon plasma)
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24.10.Nz
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(Hydrodynamic models)
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