Improved unitarized heavy baryon chiral perturbation theory for π N scattering to fourth order

We extend our previous analysis of the unitarized pion-nucleon scattering amplitude including up to fourth order terms in heavy baryon chiral perturbation theory. We pay special attention to the stability of the generated Delta(1232) resonance, the convergence problems, and the power counting of the...

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Detalles Bibliográficos
Autores: Gómez Nicola, Ángel, Nieves, J., Peláez Sagredo, José Ramón, Ruiz Arriola, E.
Tipo de recurso: artículo
Fecha de publicación:2004
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:español
OAI Identifier:oai:docta.ucm.es:20.500.14352/51400
Acceso en línea:https://hdl.handle.net/20.500.14352/51400
Access Level:acceso abierto
Palabra clave:51-73
Nucleon scattering
Física-Modelos matemáticos
Física matemática
Descripción
Sumario:We extend our previous analysis of the unitarized pion-nucleon scattering amplitude including up to fourth order terms in heavy baryon chiral perturbation theory. We pay special attention to the stability of the generated Delta(1232) resonance, the convergence problems, and the power counting of the chiral parameters.