Chiral unitary approach to s-wave meson baryon scattering in the strangeness S=0 sector
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Chiral unitary approach to s-wave meson baryon scattering in the strangeness S=0 sector

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Chiral unitary approach to s-wave meson baryon scattering in the strangeness S=0 sector

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Inoue, T.; Oset Báguena, Eulogio Perfil; Vicente Vacas, Manuel José Perfil
Aquest document és un/a article, creat/da en: 2002
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 pipiN channel is included and shown to have an important repercussion in the results, particularly in the isospin 3/2 sector. The N*(1535) resonance is dynamically generated and appears as a pole in the second Riemann sheet with its mass, width, and branching ratios in fair agreement with experiment. A Delta(1620) resonance also appears as a pole at the right position although with a very large width, coming essentially from the coupling to the pipiN channel, in qualitative agreement with experiment.

    Inoue, T. Oset Báguena, Eulogio Vicente Vacas, Manuel José 2002 Chiral unitary approach to s-wave meson baryon scattering in the strangeness S=0 sector Physical Review C 65 3 035204
http://dx.doi.org/10.1103/PhysRevC.65.035204
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