摘要The pseudorapidity distributions of charged particles produced in Cu-Cu collisions over an energy range from 22.4 GeV to 200 GeV are investigated by using a multi-source ideal gas model which contains systematically the contributions of leading nucleons. It is shown that the calculated results are in agreement with the experimental data and the model is successful in the description of the pseudorapidity distribution of charged particles. The contributions of leading nucleons increase with the increasing impact parameter. The cylinder length (the longitudinal shift of the interacting system) in rapidity space increases with the increasing energy and does not depend on centrality at a given energy.
Abstract：The pseudorapidity distributions of charged particles produced in Cu-Cu collisions over an energy range from 22.4 GeV to 200 GeV are investigated by using a multi-source ideal gas model which contains systematically the contributions of leading nucleons. It is shown that the calculated results are in agreement with the experimental data and the model is successful in the description of the pseudorapidity distribution of charged particles. The contributions of leading nucleons increase with the increasing impact parameter. The cylinder length (the longitudinal shift of the interacting system) in rapidity space increases with the increasing energy and does not depend on centrality at a given energy.
(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
SUN Jian-Xin;LIU Fu-Hu;WANG Er-Qin. Pseudorapidity Distributions of Charged Particles and Contributions of Leading Nucleons in Cu-Cu Collisions at High Energies[J]. 中国物理快报, 2010, 27(3): 32503-032503.
SUN Jian-Xin, LIU Fu-Hu, WANG Er-Qin. Pseudorapidity Distributions of Charged Particles and Contributions of Leading Nucleons in Cu-Cu Collisions at High Energies. Chin. Phys. Lett., 2010, 27(3): 32503-032503.
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2010, Vol. 27 
