Centrality dependence of charged-neutral particle fluctuations in 158A GeV 208Pb+208Pb collisions

M. M. Aggarwal et al. (WA98 Collaboration)
Phys. Rev. C 67, 044901 – Published 2 April 2003
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Abstract

Results on the study of localized fluctuations in the multiplicity of charged particles and photons produced in 158AGeV/c Pb+Pb collisions are presented for varying centralities. The charged versus neutral particle multiplicity correlations in common phase space regions of varying azimuthal sizes are analyzed by two different methods. Various types of mixed events are constructed to probe fluctuations arising from different sources. The measured results are compared to those from simulations and from mixed events. The comparison indicates the presence of nonstatistical fluctuations in both the charged particle and photon multiplicities in limited azimuthal regions. However, no correlated charged-neutral fluctuations, a possible signature of formation of disoriented chiral condensates, are observed. An upper limit on the production of disoriented chiral condensates is set.

  • Received 25 June 2002

DOI:https://doi.org/10.1103/PhysRevC.67.044901

©2003 American Physical Society

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Vol. 67, Iss. 4 — April 2003

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