Chiral quark model approach for the study of baryon resonances

Details Chiral quark model approach for the study of baryon resonances Chiral quark model approach for the study of baryon resonances

2010-12-13

arxiv.org/abs/1012.2891v1

Prog. Theor. Phys. Suppl. No. 186, 253 (2010)

Physics

Nuclear Physics

Nuclear Theory

Talk given on the New Frontiers in QCD 2010, YITP, Japan

Scientific paper

We report the chiral quark model approach for the study of baryon resonances in meson photoproduction and meson-nucleon scattering processes. Focussing on the $\pi N$ and $K N$ scatterings, we show that the cross sections near threshold can be well accounted for by the chiral quark model with only few parameters. The $S$-wave dominance in both $\pi^- p\to \eta n$ and $K^- p\to \Sigma^0\pi^0$ can be well understood in the quark model framework. In particular, the quark model provides a constraint on the relative signs for resonance coupling form factors, which seems to be consistent with results from isobaric models.

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