2006/11/09 by Feng-lan Shao, Tao Yao, Qu-bing Xie · 1 citation
Physics and Astronomy · #Charged particle #Heavy ion #High-Energy Particle Collisions Research #Ion #Large Hadron Collider #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Pseudorapidity #Quantum Chromodynamics and Particle Interactions #Quark #Quark–gluon plasma #Range (aeronautics) #Rapidity #Relativistic Heavy Ion Collider #nucl-th
paper · pdf · doi:10.1103/physrevc.75.034904
published as Phys.Rev.C75:034904,2007 · 8 pages, 9 figures, 1 table
arxiv created 2006/11/09 · openalex publication_date 2007/03/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Rapidity/pseudorapidity densities for charged particles and their centrality, rapidity, and energy dependence in Au+Au collisions at the Relativistic Heavy Ion Collider are studied in a quark combination model. Using a Gaussian-type rapidity distribution for constituent quarks as a result of Landau hydrodynamic evolution, the data at √sNN=130,200 GeV at various centralities in full pseudorapidity range are well described, and the charged-particle multiplicities are reproduced as functions of the number of participants. The energy dependence of the shape of the dNch/d\ensuremathη distribution is also described at various collision energies √sNN=200,130,62.4 GeV in central collisions with same value of parameters except 19.6 GeV. The calculated rapidity distributions and yields for the charged pions and kaons in central Au+Au collisions at √sNN=200 GeV are compared with experimental data of the BRAHMS Collaboration.