Electric charge fluctuations in central Pb+Pb collisions at 20, 30, 40, 80 and 158 AGeV

Abstract

Results are presented on event-by-event electric charge fluctuations in central Pb+Pb collisions at 20, 30, 40, 80 and 158 AGeV. The observed fluctuations are close to those expected for a gas of pions correlated by global charge conservation only. These fluctuations are considerably larger than those calculated for an ideal gas of deconfined quarks and gluons. The present measurements do not necessarily exclude reduced fluctuations from a quark-gluon plasma because these might be masked by contributions from resonance decays.

19 pages, 8 figures

References in corpus (5)

• Report from NA49
• Multiplicity fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=130$ GeV
• Transverse Momentum Fluctuations in Nuclear Collisions at 158 AGeV
• Transverse Activity of Kaons and the Deconfinement Phase Transition in Nucleus--Nucleus Collisions
• Event-by-Event Fluctuations of Particle Ratios in Central Pb+Pb Collisions at 20 to 158 AGeV

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