2012•International Journal of Modern Physics ERequires access

THE ENERGY AND CENTRALITY DEPENDENCES OF THE PSEUDORAPIDITY DISTRIBUTIONS OF THE CHARGED PARTICLES IN Au + Au COLLISIONS

ZHIJIN JIANG, Y. P. Sun, Qingguang Li

Abstract

We present the pseudorapidity distributions of the charged particles in nucleus–nucleus collisions as the function of beam energy and impact parameter through weighted superposition of the pseudorapidity distributions in the effective binary nucleon–nucleon collisions. We then analyze with the theoretical model the experimental measurements carried out by BNL-RHIC-PHOBOS Collaboration in Au + Au collisions at [Formula: see text], 130, 62.4 and 19.6 GeV. The model has only two free parameters and the theoretical results favor the experimental measurements well.

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Key concepts: Pseudorapidity, Font, Physics, Nucleon, Nuclear physics, Binary number, Impact parameter, Superposition principle