Particle multiplicities and fluctuations in 200 GeV Au-Au collisions
Giorgio Torrieri, Sangyong Jeon, Johann Rafelski
Abstract
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/π 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 140 MeV. We present predictions that allow to test the consistency of our results.
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