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Behavior of the charge fluctuation in relativistic nucleus-nucleus collisions

Ben-Hao Sa·Xu Cai·Zong-Di Su·An Tai·Dai-Mei Zhou
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Abstract

Using a hadron and string cascade model, JPCIAE, we investigated the dependence of event-by-event charge fluctuation on the energy, centrality, window size, resonance decay, and the final state interaction for $Pb+Pb$ collisions at SPS and LHC energies and $Au+Au$ collisions at RHIC energies. The JPCIAE results of charge fluctuation as a function of the rapidity window size in $Pb+Pb$ collisions at SPS energies were compared with the preliminary NA49 data. Comparisons with STAR and PHENIX data of $Au+Au$ collisions at $\sqrt{s_{nn}}$=130 GeV were also given. It seems that the final state interaction and resonance decay play a gentle role on the charge fluctuations. The charge fluctuations are slightly decreasing with or nearly independent of the reaction energy and hardly depend on the collision centrality.

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Ben-Hao Sa, Xu Cai, Zong-Di Su, An Tai, Dai-Mei Zhou. 2002-06-01. Behavior of the charge fluctuation in relativistic nucleus-nucleus collisions. https://doi.org/10.1103/physrevc.66.044902

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