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用PACIAE模型研究了Au+Au碰撞在能量sNN1/2=200GeV时,出射带电粒子前后多重数关联对碰撞中心度的依赖关系。PACIAE模型是描写相对论性核碰撞的微观输运模型,它以描写高能强子-强子碰撞的PYTHIA模型为基础。PACIAE模型理论计算结果与STAR的实验测量数据进行了比较。实验观测到的出射带电粒子前后多重数关联的特征:1)中心碰撞时独立于赝快度间隔的大小;2)
The PACIAE model was used to study the dependence of the multiple correlations of the charged particles on the collision center when the Au + Au collision was at an energy of sNN1 / 2 = 200GeV. The PACIAE model is a microscopic transport model describing relativistic nuclear collisions, based on the PYTHIA model describing the collisions of the high-energy hadron-hadron. PACIAE model theoretical calculation results and STAR experimental measurement data were compared. Experimental observations of the correlation of multiple numbers of exiting charged particles before and after: 1) the size of the pseudo-fast separation independent of the center collision; 2)