Fast equilibration of hadrons in an expanding fireball

J. Noronha-Hostler, C. Greiner, I. A. Shovkovy

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Abstract

Because of long chemical equilibration times for standard hadronic reactions in a hadron gas in relativistic heavy ion collisions, it was suggested that hadrons are born into equilibrium after the quark gluon plasma is formed. We develop a dynamical scheme, using master equations, in which Hagedorn states contribute to fast chemical equilibration times of baryons and kaons, just below the critical temperature, estimates of which are derived analytically. The hadrons quickly equilibrate for an initial over- or underpopulation of Hagedorn states. Our particle ratios compared to BNL Relativistic Heavy Ion Collider show a close match.

Original languageEnglish (US)
Article number252301
JournalPhysical Review Letters
Volume100
Issue number25
DOIs
StatePublished - Jun 26 2008

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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