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S-11-N(1535) and -N(1650) resonances in meson-baryon unitarized coupled channel chiral perturbation theory
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S-11-N(1535) and -N(1650) resonances in meson-baryon unitarized coupled channel chiral perturbation theory
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| dc.contributor.author | Nieves Pamplona, Juan Miguel | |
| dc.contributor.author | Ruiz Arriola, Enrique | |
| dc.date.accessioned | 2014-10-17T10:19:48Z | |
| dc.date.available | 2014-10-17T10:19:48Z | |
| dc.date.issued | 2001 | |
| dc.identifier.citation | Nieves Pamplona, Juan Miguel Ruiz Arriola, Enrique 2001 S-11-N(1535) and -N(1650) resonances in meson-baryon unitarized coupled channel chiral perturbation theory Physical Review D 64 11 116008 | |
| dc.identifier.uri | http://hdl.handle.net/10550/39239 | |
| dc.description.abstract | The s-wave meson-baryon scattering is analyzed for the strangeness S = 0 sector in a Bethe-Salpeter coupled channel formalism incorporating chiral symmetry. Four channels have been considered: piN, etaN, K Lambda, K Sigma. The needed two-particle irreducible matrix amplitude is taken from lowest order chiral perturbation theory in a relativistic formalism and low energy constants are fitted to the elastic piN phase shifts and the pi (-) p-->etan and pi (-) p-->K-0 Lambda cross section data. The position of the complex poles in the second Riemann sheet of the scattering amplitude determines masses and widths of the S-11-N(1535) and -N(1650) resonances, in reasonable agreement with experiment. A good overall description of data, from piN threshold up to 2 GeV, is achieved, keeping in mind that the two-pion production channel has not been included. | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Physical Review D, 2001, vol. 64, num. 11, p. 116008 | |
| dc.subject | Física | |
| dc.title | S-11-N(1535) and -N(1650) resonances in meson-baryon unitarized coupled channel chiral perturbation theory | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2014-10-17T10:19:48Z | |
| dc.identifier.doi | 10.1103/PhysRevD.64.116008 | |
| dc.identifier.idgrec | 068600 | |
| dc.rights.accessRights | open access | es_ES |
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