高能核-核碰撞末态产生粒子的赝快度分布

Particle pseudorapidity distribution in nucleus-nucleus collisions at high energy

利用Glauber模型,讨论了重离子碰撞中的核子-核子碰撞数,并以此为基础,考虑了碰撞中核子的能量损失效应,给出了核-核碰撞末态多重数的赝快度分布随碰撞参数的变化方程.并用其分析了BRAHMS合作组在sNN^(1/2)=200 GeV的Au+Au碰撞中的实验测量,所得结果与实验相符合.

By using Glauber model, the number of nucleon-nucleon collisions in heavy-ion collisions was discussed, based on which, after considering the effect of energy loss of nucleons in collisions, the pseudorapidity distribution against impact parameter for multiplicity in final state in nucleus-nucleus collisions was presented, and by employing it, the experimental measurement carried out by BRAHMS Collaboration in Au ＋ Au collisions at √SNN=200GeV was analyzed. The results are in good agreement with experimental observations.