Event-by-Event Fluctuations at 40, 80, and 158 AGeV/c in Pb+Au Collisions

Abstract

Event-by-event fluctuations of mean pt and net charge in 40, 80, and 158 AGeV/c Pb+Au collisions are presented. The observed dynamical mean pt fluctuations in central events of about 1 % are very similar to results from RHIC. The centrality dependence of mean pt fluctuations at 158 AGeV/c shows a peculiar non-monotonic pattern with respect to the extrapolation from the fluctuations measured in p+p collisions. Dynamical net charge fluctuations smaller than the charge conservation limit are observed. After correction for charge conservation, the measured fluctuation signal in central events is comparable to RHIC results.

4 pages, 6 figures, proceedings of the Quark Matter 2004, in Oakland, USA, to be published in Journal of Physics G: Nuclear and Particle Physics

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