The charged particles resulting in high energy heavy ion collisions consist of two parts: One is from the hot and dense matter produced in collisions. The other is the leading particles. We suppose that the hot and dense matter expands and freezes out into the charged particles according to the evolution-dominated hydrodynamics, and the leading particles are from participants with approximately the same energy. On the basis of this assumption, we get the pseudorapidity distributions of the charged particles produced in high energy heavy ion collisions, and make a comparison with the experimental data presented by PHOBOS Collaboration at BNL-RHIC in Cu-Cu collisions at (sNN)1/2= 62.4 and 200 GeV. The theoretical predictions are in good accordance with experimental measurements.
姜志进;王杰;张海丽;马可. 演化过程主导的流体力学模型与Cu-Cu 在BNL-RHIC能量碰撞中带电粒子的赝快度分布[J]. , 2014, 31(4): 460-467.
JIANG Zhijin;WANG Jie;ZHANG Haili;MA Ke. Evolution-dominated Hydrodynamic Model and the Pseudorapidity Distributions of the Charged Particles Produced in Cu-Cu Collisions at BNL-RHIC Energies. Nuclear Physics Review, 2014, 31(4): 460-467.