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Advances in High Energy Physics
Volume 2018, Article ID 1369098, 8 pages
Research Article

A Description of Pseudorapidity Distributions of Charged Particles Produced in Au+Au Collisions at RHIC Energies

College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China

Correspondence should be addressed to Z. J. Jiang; moc.361@562jzj

Received 15 October 2017; Revised 10 December 2017; Accepted 27 December 2017; Published 24 January 2018

Academic Editor: Fu-Hu Liu

Copyright © 2018 Z. J. Jiang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


In heavy ion collisions, charged particles come from two parts: the hot and dense matter and the leading particles. In this paper, the hot and dense matter is assumed to expand according to the hydrodynamic model including phase transition and decouples into particles via the prescription of Cooper-Frye. The leading particles are as usual supposed to have Gaussian rapidity distributions with the number equaling that of participants. The investigations of this paper show that, unlike low energy situations, the leading particles are essential in describing the pseudorapidity distributions of charged particles produced in high energy heavy ion collisions. This might be due to the different transparencies of nuclei at different energies.