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
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/248342
Ver los metadatos del registro completo
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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 Técnicas2025-10-22T12:07:37Zoai: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:34982025-10-22 12:07:37.883CONICET 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 |
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2009-10 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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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 |
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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 |
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eng |
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