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Chemical Equilibration of Antihyperons

C. Greiner
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Abstract

Rapid chemical equilibration of antihyperons by means of the interplay between strong annihilation on baryons and the corresponding backreactions of multi-mesonic (fusion-type) processes in the later, hadronic stage of an ultrarelativistic heavy ion collision will be discussed. Explicit rate calculations for a dynamical setup are presented. At maximum SPS energies yields of each antihyperon specie are obtained which are consistent with chemical saturated populations of $T \approx 150-160 $ MeV. The proposed picture supports dynamically the popular chemical freeze-out parameters extracted within thermal models.

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C. Greiner. 2002-02-25. Chemical Equilibration of Antihyperons. https://arxiv.org/abs/nucl-th/0202052

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