Measures of Charge Fluctuations in Nuclear Collisions

Abstract

The properties of two measures of charge fluctuations D and Delta Phi_q are discussed within several toy models of nuclear collisions. In particular their dependence on mean particle multiplicity, multiplicity fluctuations and net electric charge are studied. It is shown that the measure Delta Phi_q is less sensitive to these trivial biasing effects than the originally proposed measure D. Furthermore the influence of resonance decay kinematics is analysed and it is shown that it is likely to shadow a possible reduction of fluctuations due to QGP creation.

9 pages, 9 figures

References in corpus (5)

• Fluctuation Probes of Quark Deconfinement
• Charged Particle Ratio Fluctuation as a Signal for QGP
• Fluctuations of particle ratios and the abundance of hadronic resonances
• When can long-range charge fluctuations serve as a QGP signal?
• Event-by-event fluctuations of the charged particle ratio from non-equilibrium transport theory

Cited by in corpus (20)

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• SPS energy scan results and physics prospects at FAIR
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• Net-charge fluctuation in Au+Au collisions at energies available at the Facility for Antiproton and Ion Research using the UrQMD model
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• Phi-measure and Disoriented chiral condensates
• Recent results on strangeness production from NA49