Meson vacuum phenomenology in a three-flavor linear sigma model with (axial-)vector mesons
High Energy Physics - Phenomenology
2015-03-20 v2 Nuclear Theory
Abstract
We study scalar, pseudoscalar, vector, and axial-vector mesons with non-strange and strange quantum numbers in the framework of a linear sigma model with global chiral symmetry. We perform a global fit of meson masses, decay widths, as well as decay amplitudes. The quality of the fit is, for a hadronic model that does not consider isospin-breaking effects, surprisingly good. We also investigate the question whether the scalar states lie below or above 1 GeV and find the scalar states above 1 GeV to be preferred as states. Additionally, we also describe the axial-vector resonances as states.
Keywords
Cite
@article{arxiv.1208.0585,
title = {Meson vacuum phenomenology in a three-flavor linear sigma model with (axial-)vector mesons},
author = {Denis Parganlija and Peter Kovacs and Gyorgy Wolf and Francesco Giacosa and Dirk H. Rischke},
journal= {arXiv preprint arXiv:1208.0585},
year = {2015}
}
Comments
29 pages, 4 figures, 3 tables. v2 is the updated version after referee remarks (dilaton field discussed, a new figure added)