期刊论文

Wang, Q

中文

中国物理C

1674-1137

2002

26

1

64-68

10.3321/j.issn:0254-3052.2002.01.014

国家自然科学基金

本校为第一且通讯机构

利用HIJING 2.0 Monte Carlo事件产生器产生了RHIC能区(质心系能量130GeV和200GeV)的Au+Au最小无偏碰撞事件. 对产生的事件样本进行分析表明:碰撞参数与事件的多重数有近似线性依赖关系,两者都可用来表征碰撞的对心度;质子反质子产额比不明显依赖于碰撞对心度、横动量、快度和事件平面.

The HIJING 2.0 is used to generate Monte Carlo events for Au + Au minimum biased Collisions at RHIC energies-roots(NN) = 130 and 200 GeV. Using the Mont Carlo event sample, it is shown that the impact parameter has approximately a linear dependence on multiplicity. Both of them can be used as characteristic quantity for centrality. The results on the (p) over bar /p ratio show that this ratio doe, not change remarkably with centrality, transverse momentum and rapidity, and i...