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Two pion decay of the Roper resonance

Repositori DSpace/Manakin

dc.contributor.author	Hernández Gajate, Eliecer
dc.contributor.author	Oset Báguena, Eulogio
dc.contributor.author	Vicente Vacas, Manuel José
dc.date.accessioned	2014-10-24T09:41:44Z
dc.date.available	2014-10-24T09:41:44Z
dc.date.issued	2002
dc.identifier.citation	Hernández Gajate, Eliecer Oset Báguena, Eulogio Vicente Vacas, Manuel José 2002 Two pion decay of the Roper resonance Physical Review C 66 6 065201
dc.identifier.uri	http://hdl.handle.net/10550/39347
dc.description.abstract	We evaluate the two-pion decay of the Roper resonance in a model where explicit rescattering of the two final pions is accounted for by the use of unitarized chiral perturbation theory. Our model does not include an explicit epsilon or sigma scalar-isoscalar meson decay mode; instead it generates it dynamically by means of the pion rescattering. The two ways, explicit or dynamically generated, of introducing this decay channel have very different amplitudes. Nevertheless, through interference with the other terms of the model, we are able to reproduce the same phenomenology as models with explicit consideration of the epsilon meson.
dc.language.iso	eng
dc.relation.ispartof	Physical Review C, 2002, vol. 66, num. 6, p. 065201
dc.subject	Física
dc.title	Two pion decay of the Roper resonance
dc.type	journal article	es_ES
dc.date.updated	2014-10-24T09:41:44Z
dc.identifier.doi	10.1103/PhysRevC.66.065201
dc.identifier.idgrec	036307
dc.rights.accessRights	open access	es_ES