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15 February 2025
 
  » arxiv » 1109.0163

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Pion scattering and electro-production on nucleons in the resonance region in chiral quark models
Simon Sirca ; Bojan Golli ; Manuel Fiolhais ; Pedro Alberto ;
Date 1 Sep 2011
AbstractPion 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.
Source arXiv, 1109.0163
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