The Glueball in a Chiral Linear Sigma Model with Vector Mesons
High Energy Physics - Phenomenology
2012-06-14 v1 Nuclear Theory
Abstract
We present a two-flavour linear sigma model with global chiral symmetry and (axial-)vector mesons as well as an additional glueball degree of freedom. We study the structure of the well-established scalar resonances f0(1370) and f0(1500): by a fit to experimentally known decay widths we find that f0(1370) is predominantly a \bar{q}q state and f0(1500) is predominantly a glueball state. The overall phenomenology of these two resonances can be well described. Other assignments for our mixed quarkonium-glueball states are also tested, but turn out to be in worse agreement with the phenomenology. As a by-product of our analysis, the gluon condensate is determined.
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Cite
@article{arxiv.1103.3238,
title = {The Glueball in a Chiral Linear Sigma Model with Vector Mesons},
author = {Stanislaus Janowski and Denis Parganlija and Francesco Giacosa and Dirk H. Rischke},
journal= {arXiv preprint arXiv:1103.3238},
year = {2012}
}
Comments
8 pages