[Zurück]

D. Parganlija, G. Francesco, D. Rischke, W. György, P. Kovacs:
"Meson vacuum phenomenology in a three-flavor linear sigma model with (axial-)vector mesons";
Physical Review D, 87 (2013), 014011; S. 014011-1 - 014011-25.

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 U(Nf)L×U(Nf)R 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 \bar q-q states lie below or above 1 GeV and find the scalar states above 1 GeV to be preferred as \barq-q states. Additionally, we also describe the axial-vector resonances as \bar q-q states.

sigma model: linear | meson: width | meson: mass | axial-vector meson | quantum number | symmetry: chiral | flavor: 3 | vector meson | effective Lagrangian | parametrization | meson: hadronic decay | numerical calculations

http://dx.doi.org/10.1103/PhysRevD.87.014011