Net charge fluctuations in Au+Au collisions at √SNN=130 GeV

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116 Scopus citations


We present the results of charged particle fluctuations measurements in Au+Au collisions at √SNN=130 GeV using the STAR detector. Dynamical fluctuations measurements are presented for inclusive charged particle multiplicities as well as for identified charged pions, kaons, and protons. The net charge dynamical fluctuations are found to be large and negative providing clear evidence that positive and negative charged particle production is correlated within the pseudorapidity range investigated. Correlations are smaller than expected based on model-dependent predictions for a resonance gas or a quark-gluon gas which undergoes fast hadronization and freeze-out. Qualitative agreement is found with comparable scaled p+p measurements and a heavy ion jet interaction generation model calculation based on independent particle collisions, although a small deviation from the 1/N scaling dependence expected from this model is observed.

Original languageEnglish
Article number044905
Pages (from-to)449051-449059
Number of pages9
JournalPhysical Review C - Nuclear Physics
Issue number4
StatePublished - Nov 1 2003

Bibliographical note

Publisher Copyright:
© 2003 The American Physical Society.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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