Nonequilibrium meson production in strong fields
High Energy Physics - Phenomenology
2016-03-23 v1
Abstract
We develop a kinetic equation approach to nonequilibrium pion and sigma meson production in a time-dependent, chiral symmetry breaking field (inertial mechanism). We investigate the question to what extent the low-momentum pion enhancement observed in heavy-ion collisions at CERN - LHC can be addressed within this formalism. In a first step, we consider the inertial mechanism for nonequilibrium production of mesons and their simultaneous decay into pion pairs for two cases of mass evolution. The resulting pion distribution shows a strong low-momentum enhancement which can be approximated by a thermal Bose distribution with a chemical potential that appears as a trace of the nonequilibrium process of its production.
Keywords
Cite
@article{arxiv.1510.09196,
title = {Nonequilibrium meson production in strong fields},
author = {L. Juchnowski and D. Blaschke and T. Fischer and S. A. Smolyansky},
journal= {arXiv preprint arXiv:1510.09196},
year = {2016}
}
Comments
5 pages, 2 figures