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Advances in High Energy Physics
Volume 2014, Article ID 946934, 4 pages
http://dx.doi.org/10.1155/2014/946934
Research Article

Nuclear Stopping in Central Au+Au Collisions at RHIC Energies

College of Physics and Electronic Engineering, Guangxi Teachers Education University, Nanning, Guangxi 530001, China

Received 2 May 2014; Accepted 2 June 2014; Published 17 June 2014

Academic Editor: Fu-Hu Liu

Copyright © 2014 Ying Yuan and Nana Guan. 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.

Abstract

Nuclear stopping in central Au+Au collisions at relativistic heavy-ion collider (RHIC) energies is studied in the framework of a cascade mode and the modified ultrarelativistic quantum molecular dynamics (UrQMD) transport model. In the modified mode, the mean field potentials of both formed and “preformed” hadrons (from string fragmentation) are considered. It is found that the nuclear stopping is increasingly influenced by the mean-field potentials in the projectile and target regions with the increase of the reaction energy. In the central region, the calculations of the cascade model considering the modifying factor can describe the experimental data of the PHOBOS collaboration.