Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory

By means of the inverse amplitude method we unitarize the elastic pion-nucleon scattering amplitudes obtained from heavy baryon chiral perturbation theory to O(q(3)). Within this approach we can enlarge their applicability range and generate the Delta(1232) resonance. We can find a reasonable descri...

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Detalles Bibliográficos
Autores: Gómez Nicola, Ángel, Peláez Sagredo, José Ramón
Tipo de recurso: artículo
Fecha de publicación:2000
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/59581
Acceso en línea:https://hdl.handle.net/20.500.14352/59581
Access Level:acceso abierto
Palabra clave:51-73
Meson interactions
One-loop
Lagrangians
Amplitude
Física-Modelos matemáticos
Física matemática
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spelling Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theoryGómez Nicola, ÁngelPeláez Sagredo, José Ramón51-73Meson interactionsOne-loopLagrangiansAmplitudeFísica-Modelos matemáticosFísica matemáticaBy means of the inverse amplitude method we unitarize the elastic pion-nucleon scattering amplitudes obtained from heavy baryon chiral perturbation theory to O(q(3)). Within this approach we can enlarge their applicability range and generate the Delta(1232) resonance. We can find a reasonable description of the pion nucleon phase shifts with O(q(2)) parameters in agreement with the resonance saturation hypothesis. However, the uncertainties in the analysis of the low energy data as well as the large number of chiral parameters, which can have strong correlations, allow us to obtain very good fits with rather different sets of chiral constants.Amer Physical SocUniversidad Complutense de Madrid20002000-07-0120002000-07-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/59581reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/595812026-06-02T12:44:21Z
dc.title.none.fl_str_mv Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory
title Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory
spellingShingle Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory
Gómez Nicola, Ángel
51-73
Meson interactions
One-loop
Lagrangians
Amplitude
Física-Modelos matemáticos
Física matemática
title_short Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory
title_full Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory
title_fullStr Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory
title_full_unstemmed Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory
title_sort Unitarized pion-nucleon scattering within heavy baryon chiral perturbation theory
dc.creator.none.fl_str_mv Gómez Nicola, Ángel
Peláez Sagredo, José Ramón
author Gómez Nicola, Ángel
author_facet Gómez Nicola, Ángel
Peláez Sagredo, José Ramón
author_role author
author2 Peláez Sagredo, José Ramón
author2_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 51-73
Meson interactions
One-loop
Lagrangians
Amplitude
Física-Modelos matemáticos
Física matemática
topic 51-73
Meson interactions
One-loop
Lagrangians
Amplitude
Física-Modelos matemáticos
Física matemática
description By means of the inverse amplitude method we unitarize the elastic pion-nucleon scattering amplitudes obtained from heavy baryon chiral perturbation theory to O(q(3)). Within this approach we can enlarge their applicability range and generate the Delta(1232) resonance. We can find a reasonable description of the pion nucleon phase shifts with O(q(2)) parameters in agreement with the resonance saturation hypothesis. However, the uncertainties in the analysis of the low energy data as well as the large number of chiral parameters, which can have strong correlations, allow us to obtain very good fits with rather different sets of chiral constants.
publishDate 2000
dc.date.none.fl_str_mv 2000
2000-07-01
2000
2000-07-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/59581
url https://hdl.handle.net/20.500.14352/59581
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Amer Physical Soc
publisher.none.fl_str_mv Amer Physical Soc
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406900001439744
score 15,301603

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