带电多重数赝快度密度对碰撞对心度依赖关系研究

The study of centrality dependence of rapidity densities of charged-multiplicity

以核 核碰撞的独立源理论为基础 ,讨论了SNN =13 0GeV的Au +Au碰撞中 ,中心快度区带电多重数赝快度密度dnch dη对碰撞对心度的依赖关系 .

Based on the theory of independent source model, the charged-multiplicity distr ibutions in heavy ion collisions are derived which are then used to analyze the centrality dependence of the charged-multiplicity pseudo-rapidity densities, d n ch /dη, in Au+Au collisions at S NN =13 0 Ge V in midrapidity region. The theoretical results agree well with experimental fa cts.