Light meson resonances from unitarized Chiral Perturbation Theory

Details Light meson resonances from unitarized Chiral Perturbation Theory Light meson resonances from unitarized Chiral Perturbation Theory

2003-01-08

arxiv.org/abs/hep-ph/0301049v1

AIP Conf.Proc. 660 (2003) 102-115

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk to the II International Workshop on Hadron Physics & Effective Theories of Low Energy QCD. 25-29 September 2002.

Scientific paper

10.1063/1.1570564

We report on our recent progress in the generation of resonant behavior in unitarized meson-meson scattering amplitudes obtained from Chiral Perturbation Theory. These amplitudes provide simultaneously a remarkable description of the resonance region up to 1.2 GeV as well as the low energy region, since they respect the chiral symmetry expansion. By studying the position of the poles in these amplitudes it is possible to determine the mass and width of the associated resonances, as well as to get a hint on possible classification schemes, that could be of interest for the spectroscopy of the scalar sector.

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