Positive parity pentaquark towers in large N(c) QCD.
- Autores
- Pirjol. Dan; Schat, Carlos Luis
- Año de publicación
- 2007
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We construct the complete set of positive parity pentaquarks, which correspond in the quark model to sq Nc 1 states with one unit of orbital angular momentum L 1. In the large Nc limit they fall into the K 1=2 and K 3=2 irreps (towers) of the contracted SU4 c symmetry. We derive predictions for the mass spectrum and the axial couplings of these states at leading order in 1=Nc. The strong decay width of the lowest-lying positive parity exotic state is of order O1=Nc , such that this state is narrow in the large Nc limit. Replacing the antiquark with a heavy antiquark Qq Nc 1, the two towers become degenerate, split only by O1=mQ hyperfine interactions. We obtain predictions for the strong decay widths of heavy pentaquarks to ordinary baryons and heavy H Q mesons at leading order in 1=Nc and 1=mQ.
Fil: Pirjol. Dan. Massachusetts Institute of Technology; Estados Unidos
Fil: Schat, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina - Materia
-
Pentaquarks
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:11336/64482
Ver los metadatos del registro completo
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Positive parity pentaquark towers in large N(c) QCD.Pirjol. DanSchat, Carlos LuisPentaquarks1/Nc Expansionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We construct the complete set of positive parity pentaquarks, which correspond in the quark model to sq Nc 1 states with one unit of orbital angular momentum L 1. In the large Nc limit they fall into the K 1=2 and K 3=2 irreps (towers) of the contracted SU4 c symmetry. We derive predictions for the mass spectrum and the axial couplings of these states at leading order in 1=Nc. The strong decay width of the lowest-lying positive parity exotic state is of order O1=Nc , such that this state is narrow in the large Nc limit. Replacing the antiquark with a heavy antiquark Qq Nc 1, the two towers become degenerate, split only by O1=mQ hyperfine interactions. We obtain predictions for the strong decay widths of heavy pentaquarks to ordinary baryons and heavy H Q mesons at leading order in 1=Nc and 1=mQ.Fil: Pirjol. Dan. Massachusetts Institute of Technology; Estados UnidosFil: Schat, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaAmerican Physical Society2007-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/64482Pirjol. Dan; Schat, Carlos Luis; Positive parity pentaquark towers in large N(c) QCD.; American Physical Society; Physical Review D; 75; 076004; 12-2007; 1-110556-2821CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.75.076004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:09:56Zoai:ri.conicet.gov.ar:11336/64482instacron: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 12:09:57.127CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Positive parity pentaquark towers in large N(c) QCD. |
| title |
Positive parity pentaquark towers in large N(c) QCD. |
| spellingShingle |
Positive parity pentaquark towers in large N(c) QCD. Pirjol. Dan Pentaquarks 1/Nc Expansion |
| title_short |
Positive parity pentaquark towers in large N(c) QCD. |
| title_full |
Positive parity pentaquark towers in large N(c) QCD. |
| title_fullStr |
Positive parity pentaquark towers in large N(c) QCD. |
| title_full_unstemmed |
Positive parity pentaquark towers in large N(c) QCD. |
| title_sort |
Positive parity pentaquark towers in large N(c) QCD. |
| dc.creator.none.fl_str_mv |
Pirjol. Dan Schat, Carlos Luis |
| author |
Pirjol. Dan |
| author_facet |
Pirjol. Dan Schat, Carlos Luis |
| author_role |
author |
| author2 |
Schat, Carlos Luis |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Pentaquarks 1/Nc Expansion |
| topic |
Pentaquarks 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 |
We construct the complete set of positive parity pentaquarks, which correspond in the quark model to sq Nc 1 states with one unit of orbital angular momentum L 1. In the large Nc limit they fall into the K 1=2 and K 3=2 irreps (towers) of the contracted SU4 c symmetry. We derive predictions for the mass spectrum and the axial couplings of these states at leading order in 1=Nc. The strong decay width of the lowest-lying positive parity exotic state is of order O1=Nc , such that this state is narrow in the large Nc limit. Replacing the antiquark with a heavy antiquark Qq Nc 1, the two towers become degenerate, split only by O1=mQ hyperfine interactions. We obtain predictions for the strong decay widths of heavy pentaquarks to ordinary baryons and heavy H Q mesons at leading order in 1=Nc and 1=mQ. Fil: Pirjol. Dan. Massachusetts Institute of Technology; Estados Unidos Fil: Schat, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina |
| description |
We construct the complete set of positive parity pentaquarks, which correspond in the quark model to sq Nc 1 states with one unit of orbital angular momentum L 1. In the large Nc limit they fall into the K 1=2 and K 3=2 irreps (towers) of the contracted SU4 c symmetry. We derive predictions for the mass spectrum and the axial couplings of these states at leading order in 1=Nc. The strong decay width of the lowest-lying positive parity exotic state is of order O1=Nc , such that this state is narrow in the large Nc limit. Replacing the antiquark with a heavy antiquark Qq Nc 1, the two towers become degenerate, split only by O1=mQ hyperfine interactions. We obtain predictions for the strong decay widths of heavy pentaquarks to ordinary baryons and heavy H Q mesons at leading order in 1=Nc and 1=mQ. |
| publishDate |
2007 |
| dc.date.none.fl_str_mv |
2007-12 |
| 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/11336/64482 Pirjol. Dan; Schat, Carlos Luis; Positive parity pentaquark towers in large N(c) QCD.; American Physical Society; Physical Review D; 75; 076004; 12-2007; 1-11 0556-2821 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/64482 |
| identifier_str_mv |
Pirjol. Dan; Schat, Carlos Luis; Positive parity pentaquark towers in large N(c) QCD.; American Physical Society; Physical Review D; 75; 076004; 12-2007; 1-11 0556-2821 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.75.076004 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf |
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American Physical Society |
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American Physical Society |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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