Event-by-event fluctuations of the kaon to pion ratio in central Pb+Pb collisions at 158 GeV per Nucleon

Abstract

We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb+Pb collisions. After accounting for the fluctuations due to detector resolution and finite number statistics we derive an upper limit on genuine non-statistical fluctuations, perhaps related to a first or second order QCD phase transition. Such fluctuations are shown to be very small.

arXiv comment4 pages, 2 figures

References in corpus (5)

• Fluctuations of particle ratios and the abundance of hadronic resonances
• Event-by-event fluctuations of average transverse momentum in central Pb+Pb collisions at 158 GeV per nucleon
• The parton to hadron phase transition observed in Pb+Pb collisions at 158 GeV per nucleon
• The Phase Transition to the Quark Gluon Plasma: Recent Results from Lattice Calculations
• Quark Matter 99 Summary: Hadronic Signals

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