Low-momentum Pion Enhancement Induced by Chiral Symmetry Restoration

Abstract

The thermal and nonthermal pion production by sigma decay and its relation with chiral symmetry restoration in a hot and dense matter are investigated. The nonthermal decay into pions of sigma mesons which are popularly produced in chiral symmetric phase leads to a low-momentum pion enhancement as a possible signature of chiral phase transition at finite temperature and density.

3 pages, 2 figures

References in corpus (2)

• The Little Bang: Searching for quark-gluon matter in relativistic heavy-ion collisions
• Thermal and Nonthermal Pion Enhancements with Chiral Symmetry Restoration