用PACIAE模型研究碰撞能量为sNN=200GeV,碰撞中心度分别为5%、0～5%、和0～10%的Au+Au碰撞中,出射带电粒子前后多重数关联与碰撞中心度宽度的关系。PACIAE模型是1个含有完整部分子和强子级联演化的输运模型,它建立在强子-强子碰撞的输运模型PYTHIA模型之上。PACIAE模型包含4个阶段,分别为:部分子初始化,部分子演化(散射),强子化,强子演化(再散射)。用PACIAE模型产生的真实事件、和用混合事件方法产生的混合事件,以及用负二项式拟 The PACIAE model was used to study the relationship between the number of collisions and the center-of-contact widths of charged particles before and after collisions of AuNPs with collision energy of sNN = 200GeV and collision centers of 5%, 0% ~ 5% and 0% ~ 10% . The PACIAE model is a transport model that contains a complete partial and an isotropic cascade of evolutions and is based on the PYTHIA model of the hadronic-hadron-collision transport model. The PACIAE model consists of four stages, which are partial sub-initialization, partial sub-evolution (scattering), hadronization and hadron evolution (re-scattering). The real events generated by the PACIAE model, and the mixed events generated by the mixed event method, and the negative binomial