RHIC物理中QCD过程及相关QGP信号的研究

Searcing for the QGP signals is the object of studying the relativistic nucleus-nucleus collisions. In this subject, we studied the QGP signals and QCD processes by means of statistical theory and transportation method respectively. Based on the single-source statistical model, we proposed and developed the two-source statistical model, and applied it to analyze the multiple particle production in the collisions successfully. We studied the statistical properties of the particle source and obtained temperature, volumn, particle density, energy density and other thermodynamic quantities. Based on the Fritiof event generator, we developed the LUCIAE and JPCIAE events which posesses the function of transportation and can really describe the nucleus-nucleus collisions. Combining the two models, we studied the Ф meson production, J/Ψ suppression, anti-particle production and others. The study is carried out in the hadron frame which explains the particle production very well. Besides, we estimated the yield of the double-baryon state （Ω-Ω-）0+ at SPS energy by means of statistical model, its yields at RHIC energies are also estimated.

超相对论性重离子对撞机ＲＨＩＣ即将出束。在此具有极高能量密度和物质密度的实验中会有新的物理（如ＱＧＰ相变等）显示出来。为配合ＲＨＩＣ物理的国际协作研究，本申请欲创建一个比现有相对论性核碰撞事件生成器更完善、功能更强的事件生成器，以统一研究ＲＨＩＣ能量下奇异粒子、粲粒子、直接光子和流等ＱＧＰ信号以及ＱＣＤ硬散射过程的影响。