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Strange hadrons and their resonances: a diagnostic tool of QGP freeze-out dynamics

Johann Rafelski·Jean Letessier·Giorgio Torrieri
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Abstract

We update our chemical analysis of (strange) hadrons produced at the SPS in Pb--Pb collisions at 158A GeV and and present a first chemical analysis of RHIC results. We report that the shape of (anti)hyperon m_T-spectra in a thermal freeze-out analysis leads to freeze-out conditions found in chemical analysis, implying sudden strange hyperon production. We discuss how a combined analysis of several strange hadron resonances of differing lifespan can be used to understand the dynamical process present during chemical and thermal freeze-outs. In medium resonance quenching is considered.

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Johann Rafelski, Jean Letessier, Giorgio Torrieri. 2002-02-16. Strange hadrons and their resonances: a diagnostic tool of QGP freeze-out dynamics. https://doi.org/10.1103/physrevc.64.054907%2010.1103%2Fphysrevc.65.069902

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