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Phys. Rev. C 66, 044902 (2002) [5 pages]

Behavior of charge fluctuations in relativistic nucleus-nucleus collisions

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Ben-Hao Sa1,2,4,5 *, Xu Cai4,2, Zong-Di Su4,1, An Tai3, and Dai-Mei Zhou2
1China Institute of Atomic Energy, P.O. Box 275 (18), Beijing, 102413 China
2Institute of Particle Physics, Huazhong Normal University, Wuhan, 430079 China
3Department of Physics and Astronomy, University of California, at Los Angeles, Los Angeles, California 90095
4CCAST (World Lab.), P.O. Box 8730 Beijing, 100080 China
5Institute of Theoretical Physics, Academia Sinica, Beijing, 100080 China

Received 12 December 2001; published 9 October 2002

Using a hadron and string cascade model jpciae we have investigated the dependence of event-by-event charge fluctuations on (pseudo)rapidity window size, final state interaction, resonance decay, centrality, and reaction energy for Pb+Pb collisions at SPS and LHC energies and for Au+Au collisions at RHIC energies. The jpciae results of the charge fluctuations as a function of rapidity window size in Pb+Pb collisions at SPS energies are compared with the preliminary NA49 data. Comparisons with phenix and star data in Au+Au collisions at sqrt[snn]=130 GeV are also given. It is found that the charge fluctuations hardly depend on collision centrality except for very peripheral collisions and are rather insensitive to the change of reaction energy. Our calculations also show that the charge fluctuations are not strongly affected by the final state interaction and the resonance decay.


©2002 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.66.044902
DOI: 10.1103/PhysRevC.66.044902
PACS: 25.75.-q, 12.38.Mh, 24.10.Lx

* Email address: sabh@iris.ciae.ac.cn

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