Spectrum and structure of octet and decuplet baryons and their positive-parity excitations

Detalhes bibliográficos
Autor(a) principal: Chen, Chen [UNESP]
Data de Publicação: 2019
Outros Autores: Krein, Gastao [UNESP], Roberts, Craig D., Schmidt, Sebastian M., Segovia, Jorge
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1103/PhysRevD.100.054009
http://hdl.handle.net/11449/196178
Resumo: A continuum approach to the three-valence-quark bound-state problem in quantum field theory, employing parametrizations of the necessary kernel elements, is used to compute the spectrum and Poincare-covariant wave functions for all flavor-SU(3) octet and decuplet baryons and their first positive-parity excitations. Such analyses predict the existence of nonpointlike, dynamical quark-quark (diquark) correlations within all baryons; and a uniformly sound description of the systems studied is obtained by retaining flavor-antitriplet-scalar and flavor-sextet-pseudovector diquarks. Thus constituted, the rest-frame wave function of every system studied is primarily S wave in character; and the fast positive-parity excitation of each octet or decuplet baryon exhibits the characteristics of a radial excitation. Importantly, every ground-state octet and decuplet baryon possesses a radial excitation. Hence, the analysis predicts the existence and masses of positive-parity excitations of the Xi, Xi*, and Omega baryons, states which have not yet been empirically identified. This body of analysis suggests that the expression of emergent mass generation is the same in all u, d, and s baryons and, notably, that dynamical quark-quark correlations play an essential role in the structure of each one. It also provides the basis for developing an array of predictions that can be tested in new generation experiments.
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spelling Spectrum and structure of octet and decuplet baryons and their positive-parity excitationsA continuum approach to the three-valence-quark bound-state problem in quantum field theory, employing parametrizations of the necessary kernel elements, is used to compute the spectrum and Poincare-covariant wave functions for all flavor-SU(3) octet and decuplet baryons and their first positive-parity excitations. Such analyses predict the existence of nonpointlike, dynamical quark-quark (diquark) correlations within all baryons; and a uniformly sound description of the systems studied is obtained by retaining flavor-antitriplet-scalar and flavor-sextet-pseudovector diquarks. Thus constituted, the rest-frame wave function of every system studied is primarily S wave in character; and the fast positive-parity excitation of each octet or decuplet baryon exhibits the characteristics of a radial excitation. Importantly, every ground-state octet and decuplet baryon possesses a radial excitation. Hence, the analysis predicts the existence and masses of positive-parity excitations of the Xi, Xi*, and Omega baryons, states which have not yet been empirically identified. This body of analysis suggests that the expression of emergent mass generation is the same in all u, d, and s baryons and, notably, that dynamical quark-quark correlations play an essential role in the structure of each one. It also provides the basis for developing an array of predictions that can be tested in new generation experiments.RWTH Aachen University, III. Physikalisches Institut B, Aachen, GermanyConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Jiangsu Province Hundred Talents Plan for ProfessionalsMinisterio de Economia Industria y Competitividad (MINECO)U.S. Department of Energy, Office of Science, Office of Nuclear PhysicsForschungszentrum Julich GmbHUniv Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271, BR-01140070 Sao Paulo, SP, BrazilArgonne Natl Lab, Phys Div, Lemont, IL 60439 USAForschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, GermanyJARA, D-52425 Julich, GermanyUniv Pablo Olavide, Dept Sistemas Fis Quim & Nat, E-41013 Seville, SpainJustus Liebig Univ Giessen, Inst Theoret Phys, D-35392 Giessen, GermanyUniv Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271, BR-01140070 Sao Paulo, SP, BrazilCNPq: 305894/2009-9CNPq: 464898/2014-5FAPESP: 2013/01907-0FAPESP: 2015/21550-4Ministerio de Economia Industria y Competitividad (MINECO): FPA2017-86380-PU.S. Department of Energy, Office of Science, Office of Nuclear Physics: DE-AC02-06CH11357Amer Physical SocUniversidade Estadual Paulista (Unesp)Argonne Natl LabForschungszentrum JulichJARAUniv Pablo OlavideJustus Liebig Univ GiessenChen, Chen [UNESP]Krein, Gastao [UNESP]Roberts, Craig D.Schmidt, Sebastian M.Segovia, Jorge2020-12-10T19:36:02Z2020-12-10T19:36:02Z2019-09-13info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article19http://dx.doi.org/10.1103/PhysRevD.100.054009Physical Review D. College Pk: Amer Physical Soc, v. 100, n. 5, 19 p., 2019.2470-0010http://hdl.handle.net/11449/19617810.1103/PhysRevD.100.054009WOS:000485764700002Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review Dinfo:eu-repo/semantics/openAccess2021-10-23T04:45:10Zoai:repositorio.unesp.br:11449/196178Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:02:13.392138Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
title Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
spellingShingle Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
Chen, Chen [UNESP]
title_short Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
title_full Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
title_fullStr Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
title_full_unstemmed Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
title_sort Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
author Chen, Chen [UNESP]
author_facet Chen, Chen [UNESP]
Krein, Gastao [UNESP]
Roberts, Craig D.
Schmidt, Sebastian M.
Segovia, Jorge
author_role author
author2 Krein, Gastao [UNESP]
Roberts, Craig D.
Schmidt, Sebastian M.
Segovia, Jorge
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Argonne Natl Lab
Forschungszentrum Julich
JARA
Univ Pablo Olavide
Justus Liebig Univ Giessen
dc.contributor.author.fl_str_mv Chen, Chen [UNESP]
Krein, Gastao [UNESP]
Roberts, Craig D.
Schmidt, Sebastian M.
Segovia, Jorge
description A continuum approach to the three-valence-quark bound-state problem in quantum field theory, employing parametrizations of the necessary kernel elements, is used to compute the spectrum and Poincare-covariant wave functions for all flavor-SU(3) octet and decuplet baryons and their first positive-parity excitations. Such analyses predict the existence of nonpointlike, dynamical quark-quark (diquark) correlations within all baryons; and a uniformly sound description of the systems studied is obtained by retaining flavor-antitriplet-scalar and flavor-sextet-pseudovector diquarks. Thus constituted, the rest-frame wave function of every system studied is primarily S wave in character; and the fast positive-parity excitation of each octet or decuplet baryon exhibits the characteristics of a radial excitation. Importantly, every ground-state octet and decuplet baryon possesses a radial excitation. Hence, the analysis predicts the existence and masses of positive-parity excitations of the Xi, Xi*, and Omega baryons, states which have not yet been empirically identified. This body of analysis suggests that the expression of emergent mass generation is the same in all u, d, and s baryons and, notably, that dynamical quark-quark correlations play an essential role in the structure of each one. It also provides the basis for developing an array of predictions that can be tested in new generation experiments.
publishDate 2019
dc.date.none.fl_str_mv 2019-09-13
2020-12-10T19:36:02Z
2020-12-10T19:36:02Z
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/PhysRevD.100.054009
Physical Review D. College Pk: Amer Physical Soc, v. 100, n. 5, 19 p., 2019.
2470-0010
http://hdl.handle.net/11449/196178
10.1103/PhysRevD.100.054009
WOS:000485764700002
url http://dx.doi.org/10.1103/PhysRevD.100.054009
http://hdl.handle.net/11449/196178
identifier_str_mv Physical Review D. College Pk: Amer Physical Soc, v. 100, n. 5, 19 p., 2019.
2470-0010
10.1103/PhysRevD.100.054009
WOS:000485764700002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Physical Review D
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 19
dc.publisher.none.fl_str_mv Amer Physical Soc
publisher.none.fl_str_mv Amer Physical Soc
dc.source.none.fl_str_mv Web of Science
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
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