Portal de Periódicos da CAPES

Flavor SU(3) breaking effects in the chiral unitary model for meson-baryon scatterings

2003; American Institute of Physics; Volume: 68; Issue: 1 Linguagem: Inglês

10.1103/physrevc.68.018201

1538-4497

Tetsuo Hyodo, Seung-il Nam, Daisuke Jido, Atsushi Hosaka,

High-Energy Particle Collisions Research

We examine flavor SU(3) breaking effects on meson-baryon scattering amplitudes in the chiral unitary model. It turns out that the SU(3) breaking, which appears in the leading quark mass term in the chiral expansion, can not explain the channel dependence of the subtraction parameters of the model, which are crucial to reproduce the observed scattering amplitudes and resonance properties.