Parity partners in the baryon resonance spectrum
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevC.96.015208 http://hdl.handle.net/11449/228379 |
Resumo: | We describe a calculation of the spectrum of flavor-SU(3) octet and decuplet baryons, their parity partners, and the radial excitations of these systems, made using a symmetry-preserving treatment of a vector × vector contact interaction as the foundation for the relevant few-body equations. Dynamical chiral symmetry breaking generates nonpointlike diquarks within these baryons and hence, using the contact interaction, flavor-antitriplet scalar, pseudoscalar, vector, and flavor-sextet axial-vector quark-quark correlations can all play active roles. The model yields reasonable masses for all systems studied and Faddeev amplitudes for ground states and associated parity partners that sketch a realistic picture of their internal structure: ground-state, even-parity baryons are constituted, almost exclusively, from like-parity diquark correlations, but orbital angular momentum plays an important role in the rest-frame wave functions of odd-parity baryons, whose Faddeev amplitudes are dominated by odd-parity diquarks. |
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Repositório Institucional da UNESP |
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Parity partners in the baryon resonance spectrumWe describe a calculation of the spectrum of flavor-SU(3) octet and decuplet baryons, their parity partners, and the radial excitations of these systems, made using a symmetry-preserving treatment of a vector × vector contact interaction as the foundation for the relevant few-body equations. Dynamical chiral symmetry breaking generates nonpointlike diquarks within these baryons and hence, using the contact interaction, flavor-antitriplet scalar, pseudoscalar, vector, and flavor-sextet axial-vector quark-quark correlations can all play active roles. The model yields reasonable masses for all systems studied and Faddeev amplitudes for ground states and associated parity partners that sketch a realistic picture of their internal structure: ground-state, even-parity baryons are constituted, almost exclusively, from like-parity diquark correlations, but orbital angular momentum plays an important role in the rest-frame wave functions of odd-parity baryons, whose Faddeev amplitudes are dominated by odd-parity diquarks.Department of Physics Nanjing UniversityInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271Physics Division Argonne National LaboratoryPhysik-Department Technische Universität München, James-Franck-Strasse 1Joint Center for Particle Nuclear Physics and CosmologyInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271Nanjing UniversityUniversidade Estadual Paulista (UNESP)Argonne National LaboratoryTechnische Universität MünchenNuclear Physics and CosmologyLu, YaChen, Chen [UNESP]Roberts, Craig D.Segovia, JorgeXu, Shu-ShengZong, Hong-Shi2022-04-29T08:14:23Z2022-04-29T08:14:23Z2017-07-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevC.96.015208Physical Review C, v. 96, n. 1, 2017.2469-99932469-9985http://hdl.handle.net/11449/22837910.1103/PhysRevC.96.0152082-s2.0-85027331324Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review Cinfo:eu-repo/semantics/openAccess2022-04-29T08:14:23Zoai:repositorio.unesp.br:11449/228379Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:14:23Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Parity partners in the baryon resonance spectrum |
title |
Parity partners in the baryon resonance spectrum |
spellingShingle |
Parity partners in the baryon resonance spectrum Lu, Ya |
title_short |
Parity partners in the baryon resonance spectrum |
title_full |
Parity partners in the baryon resonance spectrum |
title_fullStr |
Parity partners in the baryon resonance spectrum |
title_full_unstemmed |
Parity partners in the baryon resonance spectrum |
title_sort |
Parity partners in the baryon resonance spectrum |
author |
Lu, Ya |
author_facet |
Lu, Ya Chen, Chen [UNESP] Roberts, Craig D. Segovia, Jorge Xu, Shu-Sheng Zong, Hong-Shi |
author_role |
author |
author2 |
Chen, Chen [UNESP] Roberts, Craig D. Segovia, Jorge Xu, Shu-Sheng Zong, Hong-Shi |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Nanjing University Universidade Estadual Paulista (UNESP) Argonne National Laboratory Technische Universität München Nuclear Physics and Cosmology |
dc.contributor.author.fl_str_mv |
Lu, Ya Chen, Chen [UNESP] Roberts, Craig D. Segovia, Jorge Xu, Shu-Sheng Zong, Hong-Shi |
description |
We describe a calculation of the spectrum of flavor-SU(3) octet and decuplet baryons, their parity partners, and the radial excitations of these systems, made using a symmetry-preserving treatment of a vector × vector contact interaction as the foundation for the relevant few-body equations. Dynamical chiral symmetry breaking generates nonpointlike diquarks within these baryons and hence, using the contact interaction, flavor-antitriplet scalar, pseudoscalar, vector, and flavor-sextet axial-vector quark-quark correlations can all play active roles. The model yields reasonable masses for all systems studied and Faddeev amplitudes for ground states and associated parity partners that sketch a realistic picture of their internal structure: ground-state, even-parity baryons are constituted, almost exclusively, from like-parity diquark correlations, but orbital angular momentum plays an important role in the rest-frame wave functions of odd-parity baryons, whose Faddeev amplitudes are dominated by odd-parity diquarks. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07-28 2022-04-29T08:14:23Z 2022-04-29T08:14:23Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevC.96.015208 Physical Review C, v. 96, n. 1, 2017. 2469-9993 2469-9985 http://hdl.handle.net/11449/228379 10.1103/PhysRevC.96.015208 2-s2.0-85027331324 |
url |
http://dx.doi.org/10.1103/PhysRevC.96.015208 http://hdl.handle.net/11449/228379 |
identifier_str_mv |
Physical Review C, v. 96, n. 1, 2017. 2469-9993 2469-9985 10.1103/PhysRevC.96.015208 2-s2.0-85027331324 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review C |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803649643769233408 |