Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion

Autores
Goity, J. L.; Jayalath, C.; Scoccola, Norberto Nerio
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The partial decay widths of positive parity baryons belonging to 56-plets of SU(6) are analyzed in the framework of the 1/Nc expansion. The channels considered are those with emission of a single pi, K, or barK meson, and the analysis is carried out to subleading order in 1/Nc and to first order in SU(3) symmetry breaking. The results for the multiplet [56,0+], to which the Roper resonance belongs, indicate a poor description of the widths at leading order, requiring important next to leading order corrections. For the multiplet [56,2+], the P wave decays in the nonstrange sector are well described at leading order, while the F wave decays require the next to leading order corrections, which turn out to be of natural magnitude. SU(3) breaking effects are poorly determined, because only few decays with a K meson in the final state are established, and their widths are not known with sufficient accuracy.
Fil: Goity, J. L.. Hampton University; Estados Unidos. Thomas Jefferson National Accelerator Facility; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Jayalath, C.. Hampton University; Estados Unidos
Fil: Scoccola, Norberto Nerio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina. Fundación Favaloro; Argentina
Materia
Large Nc QCD
Excited baryons
1/Nc expansion
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/248342
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/248342
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Analysis of 56-plet positive parity baryon decays in the 1 / N c expansionGoity, J. L.Jayalath, C.Scoccola, Norberto NerioLarge Nc QCDExcited baryons1/Nc expansionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The partial decay widths of positive parity baryons belonging to 56-plets of SU(6) are analyzed in the framework of the 1/Nc expansion. The channels considered are those with emission of a single pi, K, or barK meson, and the analysis is carried out to subleading order in 1/Nc and to first order in SU(3) symmetry breaking. The results for the multiplet [56,0+], to which the Roper resonance belongs, indicate a poor description of the widths at leading order, requiring important next to leading order corrections. For the multiplet [56,2+], the P wave decays in the nonstrange sector are well described at leading order, while the F wave decays require the next to leading order corrections, which turn out to be of natural magnitude. SU(3) breaking effects are poorly determined, because only few decays with a K meson in the final state are established, and their widths are not known with sufficient accuracy.Fil: Goity, J. L.. Hampton University; Estados Unidos. Thomas Jefferson National Accelerator Facility; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Jayalath, C.. Hampton University; Estados UnidosFil: Scoccola, Norberto Nerio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina. Fundación Favaloro; ArgentinaAmerican Physical Society2009-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/248342Goity, J. L.; Jayalath, C.; Scoccola, Norberto Nerio; Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 80; 7; 10-2009; 1-100556-28211550-7998CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.80.074027info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.80.074027info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:35:14Zoai:ri.conicet.gov.ar:11336/248342instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:35:14.958CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion
title Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion
spellingShingle Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion
Goity, J. L.
Large Nc QCD
Excited baryons
1/Nc expansion
title_short Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion
title_full Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion
title_fullStr Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion
title_full_unstemmed Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion
title_sort Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion
dc.creator.none.fl_str_mv Goity, J. L.
Jayalath, C.
Scoccola, Norberto Nerio
author Goity, J. L.
author_facet Goity, J. L.
Jayalath, C.
Scoccola, Norberto Nerio
author_role author
author2 Jayalath, C.
Scoccola, Norberto Nerio
author2_role author
author
dc.subject.none.fl_str_mv Large Nc QCD
Excited baryons
1/Nc expansion
topic Large Nc QCD
Excited baryons
1/Nc expansion
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The partial decay widths of positive parity baryons belonging to 56-plets of SU(6) are analyzed in the framework of the 1/Nc expansion. The channels considered are those with emission of a single pi, K, or barK meson, and the analysis is carried out to subleading order in 1/Nc and to first order in SU(3) symmetry breaking. The results for the multiplet [56,0+], to which the Roper resonance belongs, indicate a poor description of the widths at leading order, requiring important next to leading order corrections. For the multiplet [56,2+], the P wave decays in the nonstrange sector are well described at leading order, while the F wave decays require the next to leading order corrections, which turn out to be of natural magnitude. SU(3) breaking effects are poorly determined, because only few decays with a K meson in the final state are established, and their widths are not known with sufficient accuracy.
Fil: Goity, J. L.. Hampton University; Estados Unidos. Thomas Jefferson National Accelerator Facility; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Jayalath, C.. Hampton University; Estados Unidos
Fil: Scoccola, Norberto Nerio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina. Fundación Favaloro; Argentina
description The partial decay widths of positive parity baryons belonging to 56-plets of SU(6) are analyzed in the framework of the 1/Nc expansion. The channels considered are those with emission of a single pi, K, or barK meson, and the analysis is carried out to subleading order in 1/Nc and to first order in SU(3) symmetry breaking. The results for the multiplet [56,0+], to which the Roper resonance belongs, indicate a poor description of the widths at leading order, requiring important next to leading order corrections. For the multiplet [56,2+], the P wave decays in the nonstrange sector are well described at leading order, while the F wave decays require the next to leading order corrections, which turn out to be of natural magnitude. SU(3) breaking effects are poorly determined, because only few decays with a K meson in the final state are established, and their widths are not known with sufficient accuracy.
publishDate 2009
dc.date.none.fl_str_mv 2009-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/248342
Goity, J. L.; Jayalath, C.; Scoccola, Norberto Nerio; Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 80; 7; 10-2009; 1-10
0556-2821
1550-7998
CONICET Digital
CONICET
url http://hdl.handle.net/11336/248342
identifier_str_mv Goity, J. L.; Jayalath, C.; Scoccola, Norberto Nerio; Analysis of 56-plet positive parity baryon decays in the 1 / N c expansion; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 80; 7; 10-2009; 1-10
0556-2821
1550-7998
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.80.074027
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.80.074027
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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