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Constraining freeze-out with yields and fluctuations

Giorgio Torrieri·Sangyong Jeon·Johann Rafelski
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Abstract

We show that the simultaneous measurement of yields and fluctuations in heavy ion collisions is capable of falsifying and constraining the statistical hadronization model. We show how such a measurement can test for chemical non-equilibrium, and distinguish between a high temperature chemically equilibrated freeze-out from a supercooled freeze-out with an over-saturated phase space. We further explain how this measurement can be used to obtain a model-independent estimate of the effect of post-freezeout hadronic interactions.

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Giorgio Torrieri, Sangyong Jeon, Johann Rafelski. 2005-09-27. Constraining freeze-out with yields and fluctuations. https://arxiv.org/abs/nucl-th/0509077

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