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Sigma Decay at Finite Temperature and Density

P. Zhuang·Z. Yang
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Abstract

Sigma decay and its relation with chiral phase transition are discussed at finite temperature and density in the framework of the Nambu-Jona-Lasinio model. The decay rate for the process sigma -> 2 pions to first order in a 1/N_c expansion is calculated as a function of temperature T and baryon density n_b. In particular, only when the chiral phase transition happens around the tricritical point, the sigma decay results in a non-thermal enhancement of pions in the final state distributions in relativistic heavy ion collisions.

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P. Zhuang, Z. Yang. 2000-08-23. Sigma Decay at Finite Temperature and Density. https://doi.org/10.1088/0256-307x%2F18%2F3%2F311

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