Pion damping width and pion spectral function in hot pion gas
High Energy Physics - Phenomenology
2022-11-09 v1 Nuclear Theory
Abstract
The temperature behaviour of the pion width in the hadronic phase is investigated in the framework of the NJL model. The contribution to the width from the pion-pion collision is considered with a scalar sigma-meson as an intermediate state. It is shown that the pion width significantly broadens at GeV. Using the two-step iteration method, suggested by Kadanoff and Baym, the pion spectral function in a hot pion gas is calculated at different temperatures.
Keywords
Cite
@article{arxiv.2205.11436,
title = {Pion damping width and pion spectral function in hot pion gas},
author = {D. Goderidze and A. Friesen and Yu. Kalinovsky},
journal= {arXiv preprint arXiv:2205.11436},
year = {2022}
}
Comments
8 pages, 4 figures