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arXiv · 1208.5611

Scalar mesons in a linear sigma model with (axial-)vector mesons

D. Parganlija·P. Kovacs·Gy. Wolf·F. Giacosa·D. H. Rischke
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Abstract

The structure of the scalar mesons has been a subject of debate for many decades. In this work we look for $\bar{q}q$ states among the physical resonances using an extended Linear Sigma Model that contains scalar, pseudoscalar, vector, and axial-vector mesons both in the non-strange and strange sectors. We perform global fits of meson masses, decay widths and amplitudes in order to ascertain whether the scalar $\bar{q}q$ states are below or above 1 GeV. We find the scalar states above 1 GeV to be preferred as $\bar{q}q$ states.

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D. Parganlija, P. Kovacs, Gy. Wolf, F. Giacosa, D. H. Rischke. 2012-08-28. Scalar mesons in a linear sigma model with (axial-)vector mesons. https://doi.org/10.1063/1.4795961

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