采用修正的Landau流体力学模型,并考虑到带头粒子效应,对高能重离子碰撞末态带电粒子的赝快度分布进行了讨论.指出:带头粒子的快度分布应为高斯形式,其正规化常数为参与者数.研究表明:流体力学模型本身与BNL-RHIC-PHOBOS合作组在√sNN=200 GeV的Cu+Cu碰撞中的实验测量符合得不是很好,只有将参与者的贡献包括在内,实验结果才能得到很好的描述.
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