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Improved unitarized Heavy Baryon Chiral Perturbation Theory for pi N scattering

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Improved unitarized Heavy Baryon Chiral Perturbation Theory for pi N scattering

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dc.contributor.author Gómez Nicola, Ángel
dc.contributor.author Nieves Pamplona, Juan Miguel
dc.contributor.author Peláez Sagredo, José Ramón
dc.contributor.author Ruiz Arriola, Enrique
dc.date.accessioned 2014-10-17T09:44:33Z
dc.date.available 2014-10-17T09:44:33Z
dc.date.issued 2000
dc.identifier.citation Gómez Nicola, Ángel Nieves Pamplona, Juan Miguel Peláez Sagredo, José Ramón Ruiz Arriola, Enrique 2000 Improved unitarized Heavy Baryon Chiral Perturbation Theory for pi N scattering Physics Letters B 486 1-2 77 85
dc.identifier.uri http://hdl.handle.net/10550/39233
dc.description.abstract We show how the unitarized description of pion nucleon scattering within Heavy Baryon Chiral Perturbation Theory can be considerably improved, by a suitable reordering of the expansion over the nucleon mass. Within this framework, the Delta resonance and its associated pole can be recovered from the chiral parameters obtained from low-energy determinations. In addition, we can obtain a good description of the six S and P wave phase shifts in terms of chiral parameters with a natural size and compatible with the Resonance Saturation Hypothesis.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 2000, vol. 486, num. 1-2, p. 77-85
dc.subject Física
dc.title Improved unitarized Heavy Baryon Chiral Perturbation Theory for pi N scattering
dc.type journal article es_ES
dc.date.updated 2014-10-17T09:44:33Z
dc.identifier.doi 10.1016/S0370-2693(00)00761-9
dc.identifier.idgrec 068606
dc.rights.accessRights open access es_ES

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