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

STAR Collaboration

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

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
Volume68
Issue number4
StatePublished - Nov 1 2003

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charged particles
collisions
particle collisions
kaons
particle production
gases
heavy ions
pions
quarks
deviation
scaling
protons
detectors
predictions
interactions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Net charge fluctuations in Au+Au collisions at √SNN=130 GeV. / STAR Collaboration.

In: Physical Review C - Nuclear Physics, Vol. 68, No. 4, 044905, 01.11.2003, p. 449051-449059.

Research output: Contribution to journalArticle

STAR Collaboration 2003, 'Net charge fluctuations in Au+Au collisions at √SNN=130 GeV', Physical Review C - Nuclear Physics, vol. 68, no. 4, 044905, pp. 449051-449059.
STAR Collaboration. / Net charge fluctuations in Au+Au collisions at √SNN=130 GeV. In: Physical Review C - Nuclear Physics. 2003 ; Vol. 68, No. 4. pp. 449051-449059.
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abstract = "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.",
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N2 - 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.

AB - 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.

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