Photons from Quark and Hadron Phases in Au+Au Collisions

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（9）
• 页码范围: 3188-3191
• 页数: 4页
• 语种: 英文

摘要

Based on a relativistic hydrodynamic model describing the evolution of the chemically equilibrating quark-gluon plasma system with finite baryon density in a 3+l-dimensional spacetime, we compute photons from the quark phase, hadronic phase and initial non-thermal contributions. It is found that due to the effects of the initial quark chemical potential, chemical equilibration and rapid expansion of the system, the photon yield of the quark-gluon plasma is strongly suppressed, and photons from hadronic matter and initial non-thermal contributions almost reproduce experimental data.