Sigma Decay at Finite Temperature and Density
Nuclear Theory
2009-11-06 v1
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.
Cite
@article{arxiv.nucl-th/0008041,
title = {Sigma Decay at Finite Temperature and Density},
author = {P. Zhuang and Z. Yang},
journal= {arXiv preprint arXiv:nucl-th/0008041},
year = {2009}
}
Comments
6 pages, 3 Postscript figures, submitted to Chin. Phys. Lett