[Zurück]

G. Wolf, D. Parganlija, P. Kovacs, F. Giacosa, D. Rischke:
"Scalar mesons in a linear sigma model with (axial-)vector mesons";
in: "Xii Hadron Physics", AIP Conference Proceedings, 2013, S. 226 - 231.

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.

linear sigma model, scalar meson

http://dx.doi.org/10.1063/1.4795961

http://publik.tuwien.ac.at/files/PubDat_224238.pdf