摘要We present the pseudorapidity distributions of charged particles in nucleus-nucleus collisions as functions of beam energy and impact parameter through weighted superposition of the pseudorapidity distributions in the effective binary nucleon-nucleon collisions. Using the theoretical model we then analyze the experimental measurements carried out by the BNL-RHIC-PHOBOS collaboration in Cu+Cu collisions at sNN1/2=200, 62.4 and 22.4 GeV. The model has only two free parameters and the theoretical results favor the experimental measurements well.
Abstract：We present the pseudorapidity distributions of charged particles in nucleus-nucleus collisions as functions of beam energy and impact parameter through weighted superposition of the pseudorapidity distributions in the effective binary nucleon-nucleon collisions. Using the theoretical model we then analyze the experimental measurements carried out by the BNL-RHIC-PHOBOS collaboration in Cu+Cu collisions at sNN1/2=200, 62.4 and 22.4 GeV. The model has only two free parameters and the theoretical results favor the experimental measurements well.
(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
JIANG Zhi-Jin**, SUN Yu-Fen. Energy and Centrality Dependences of Pseudorapidity Distributions of Charged Particles in Cu+Cu Collisions[J]. 中国物理快报, 2012, 29(2): 22502-022502.
JIANG Zhi-Jin, SUN Yu-Fen. Energy and Centrality Dependences of Pseudorapidity Distributions of Charged Particles in Cu+Cu Collisions. Chin. Phys. Lett., 2012, 29(2): 22502-022502.
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