高能Au+Au碰撞末态多重数赝快度分布研究

利用Glauber模型,计算出核核碰撞中的参与者数、旁观者数及二元核子核子碰撞数.考虑到能量损失和旁观者效应对末态带电粒子赝快度分布的影响,通过对核子核子碰撞快度分布的逐次叠加得到核核碰撞末态带电粒子的赝快度分布.并用其讨论了PHOBOS合作组在高能Au+Au碰撞所做的实验测量.理论与实验结果符合得很好.

Charged-particle pseudorapidity distributions in Au+Au collisions at high energy

Using the Glauber model,the numbers of participants,spectators and as well as the number of binary nucleon-nucleon collisions were calculated in high-energy heavy-ion collisions.The pseudorapidity distributions of charged particles in nucleus-nucleus collisions was obtained by repeated addition of the rapidity distribution of nucleon-nucleon collision with consideration of the effect of energy loss and spectator particle influence.The theoretical results agree well with those of the experimental measurement...