Net-charge probability distributions in heavy ion collisions at chemical freeze-out

Details Net-charge probability distributions in heavy ion collisions at chemical freeze-out Net-charge probability distributions in heavy ion collisions at chemical freeze-out

2011-11-21

arxiv.org/abs/1111.5063v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 6 figures

Scientific paper

We explore net charge probability distributions in heavy ion collisions within the hadron resonance gas model. The distributions for strangeness, electric charge and baryon number are derived. We show that, within this model, net charge probability distributions and the resulting fluctuations can be computed directly from the measured yields of charged and multi-charged hadrons. The influence of multi-charged particles and quantum statistics on the shape of the distribution is examined. We discuss the properties of the net proton distribution along the chemical freeze-out line. The model results presented here can be compared with data at RHIC energies and at the LHC to possibly search for the relation between chemical freeze-out and QCD cross-over lines in heavy ion collisions.

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