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arXiv · 1109.0163

Pion scattering and electro-production on nucleons in the resonance region in chiral quark models

Simon Sirca·Bojan Golli·Manuel Fiolhais·Pedro Alberto
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Abstract

Pion scattering and electro-production amplitudes have been computed in a coupled-channel framework incorporating quasi-bound quark-model states, based on the Cloudy Bag model. All relevant low-lying nucleon resonances in the P33, P11, and S11 partial waves have been covered, including the Delta(1232), the N*(1440), N*(1535), and N*(1650). Consistent results have been obtained for elastic and inelastic scattering (two-pion, eta-N, and K-Lambda channels), as well as for electro-production. The meson cloud has been shown to play a major role, in particular in electro-magnetic observables in the P33 and P11 channels.

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Simon Sirca, Bojan Golli, Manuel Fiolhais, Pedro Alberto. 2011-09-01. Pion scattering and electro-production on nucleons in the resonance region in chiral quark models. https://arxiv.org/abs/1109.0163

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