Long-range charge fluctuations and search for a quark-gluon plasma signal

E. V. Shuryak and M. A. Stephanov
Phys. Rev. C 63, 064903 – Published 3 May 2001
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Abstract

We critically discuss a recent suggestion to use long-range modes of charge (electric or baryon) fluctuations as a signal for the presence of quark-gluon plasma at the early stages of a heavy ion collision. We evaluate the rate of diffusion in rapidity for different secondaries, and argue that for conditions of the Super Proton Synchrotron (SPS) experiments, it is strong enough to relax the magnitude of those fluctuations almost to its equilibrium values, given by hadronic “resonance gas.” We evaluate the detector acceptance needed to measure such “primordial” long-range fluctuations at Relativistic Heavy Ion Collider (RHIC) conditions. We conclude with an application of the charge fluctuation analysis to the search for the QCD critical point.

  • Received 30 October 2000

DOI:https://doi.org/10.1103/PhysRevC.63.064903

©2001 American Physical Society

Authors & Affiliations

E. V. Shuryak1 and M. A. Stephanov2

  • 1Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800
  • 2Department of Physics, University of Illinois, Chicago, Illinois 60607-7059RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973

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Issue

Vol. 63, Iss. 6 — June 2001

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