Particle multiplicities and fluctuations in 200 GeV Au-Au collisions

Details Particle multiplicities and fluctuations in 200 GeV Au-Au collisions Particle multiplicities and fluctuations in 200 GeV Au-Au collisions

2005-10-07

arxiv.org/abs/nucl-th/0510024v1

Physics

Nuclear Physics

Nuclear Theory

Proceedings for ISMD2005, Kromeriz, Czech republic

Scientific paper

10.1063/1.2197395

We use the statistical hadronization model (SHM) to describe hadron multiplicity yields and fluctuations. We consider 200 GeV Au-Au collisions, and show that both event averaged yields of stable particles and resonances, and event-by-event fluctuation of the $K/\pi$ ratio can be described within the SHM using the same set of thermal parameters, provided that the phase space occupancy parameter value is significantly above chemical equilibrium, and the freeze-out temperature is $\sim 140$ MeV. We present predictions that allow to test the consistency of our results.

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