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arXiv · 1103.3238

The Glueball in a Chiral Linear Sigma Model with Vector Mesons

Stanislaus Janowski·Denis Parganlija·Francesco Giacosa·Dirk H. Rischke
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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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Stanislaus Janowski, Denis Parganlija, Francesco Giacosa, Dirk H. Rischke. 2011-03-16. The Glueball in a Chiral Linear Sigma Model with Vector Mesons. https://doi.org/10.1103/physrevd.84.054007

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