Fast chemical equilibration of hadrons in an expanding fireball

J. Noronha-Hostler; C. Greiner; I. Shovkovy

doi:10.1007/s12648-011-0083-x

Fast chemical equilibration of hadrons in an expanding fireball

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

Research output: Contribution to journal › Article › peer-review

Abstract

The suggestion of hadrons being "born" into equilibrium arose from long chemical equilibration times of hadrons in the hadron gas phase in relativistic heavy ion collisions. Here we consider possible Hagedorn states, which contribute to fast chemical equilibration times of baryon anti-baryon pairs (as well as kaon anti-kaon pairs) inside a hadron gas and just below the critical temperature. Master equations are used to describe the reactions. Within a Bjorken expansion scenario, the kaons and baryons as well as the bath of pions and Hagedorn resonances can indeed quickly chemically equilibrate.

Original language	English (US)
Pages (from-to)	819-824
Number of pages	6
Journal	Indian Journal of Physics
Volume	85
Issue number	6
DOIs	https://doi.org/10.1007/s12648-011-0083-x
State	Published - Jun 1 2011
Externally published	Yes

Keywords

Chemical freeze-out

ASJC Scopus subject areas

General Physics and Astronomy

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10.1007/s12648-011-0083-x

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AU - Greiner, C.

AU - Shovkovy, I.

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N2 - The suggestion of hadrons being "born" into equilibrium arose from long chemical equilibration times of hadrons in the hadron gas phase in relativistic heavy ion collisions. Here we consider possible Hagedorn states, which contribute to fast chemical equilibration times of baryon anti-baryon pairs (as well as kaon anti-kaon pairs) inside a hadron gas and just below the critical temperature. Master equations are used to describe the reactions. Within a Bjorken expansion scenario, the kaons and baryons as well as the bath of pions and Hagedorn resonances can indeed quickly chemically equilibrate.

AB - The suggestion of hadrons being "born" into equilibrium arose from long chemical equilibration times of hadrons in the hadron gas phase in relativistic heavy ion collisions. Here we consider possible Hagedorn states, which contribute to fast chemical equilibration times of baryon anti-baryon pairs (as well as kaon anti-kaon pairs) inside a hadron gas and just below the critical temperature. Master equations are used to describe the reactions. Within a Bjorken expansion scenario, the kaons and baryons as well as the bath of pions and Hagedorn resonances can indeed quickly chemically equilibrate.

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Fast chemical equilibration of hadrons in an expanding fireball

Abstract

Keywords

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