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Chiral dynamics and pion-nucleon scattering around the N*(1535) resonance

We study the S-wave interaction of mesons with baryons in the strangeness S=0 sector in a coupled channel unitary approach. The basic dynamics is drawn from the lowest order meson baryon chiral Lagrangians. Small modifications inspired by models with explicit vector meson exchange in the t-channel are also considered. In addition the pi pi N channel is included and shown to have an important repercussion in the results, particularly in the isospin 3/2 sector.

preprint2001arXivOpen access
T. InoueJ. C. NacherM. J. Vicente VacasE. Oset
hep-phnucl-th
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T. InoueJ. C. NacherM. J. Vicente VacasE. Oset

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