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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/64482
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/64482
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.75.076004
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
_version_ 1846782481367302144
score 12.982451

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