Intermediate mass dileptons from a chemically non-equilibrated quark–gluon plasma

✍ Scribed by Zejun He; Jiali Long; Weizhou Jiang; Yugang Ma; Bo Liu

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 160 KB
• Volume: 724
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(03)01516-1

✦ Synopsis

We have studied the evolution and dilepton production of a chemically equilibrating quark-gluon plasma considering finite baryon density based on Jüttner distribution of partons, and found that due to the increasing of the quark phase life-time with increasing initial quark chemical potential, high initial temperature, large gluon density of the system as well as large gluon fusion gg → c c cross section in the intermediate mass region, quark-antiquark annihilation q q → l l, especially, thermal charmed quarks from the gluon fusion gg → c c and quark-antiquark annihilation q q → c c provide a dominant contribution to dileptons, resulting in a significant enhancement of intermediate mass dileptons.