Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
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/11449/228726 |
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 Poincaré-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 first 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 Ξ, Ξ∗, and ω 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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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 Poincaré-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 first 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 Ξ, Ξ∗, and ω 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.Instituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271Physics Division Argonne National LaboratoryInstitute for Advanced Simulation Forschungszentrum Jülich JARADepartamento de Sistemas Físicos Químicos y Naturales Universidad Pablo de OlavideInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271Universidade Estadual Paulista (UNESP)Argonne National LaboratoryJARAUniversidad Pablo de OlavideChen, Chen [UNESP]Krein, Gastão [UNESP]Roberts, Craig D.Schmidt, Sebastian M.Segovia, Jorge2022-04-29T08:28:24Z2022-04-29T08:28:24Z2019-09-13info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevD.100.054009Physical Review D, v. 100, n. 5, 2019.2470-00292470-0010http://hdl.handle.net/11449/22872610.1103/PhysRevD.100.0540092-s2.0-85072950133Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review Dinfo:eu-repo/semantics/openAccess2022-04-29T08:28:24Zoai:repositorio.unesp.br:11449/228726Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:21:15.572259Repositório 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, Gastão [UNESP] Roberts, Craig D. Schmidt, Sebastian M. Segovia, Jorge |
author_role |
author |
author2 |
Krein, Gastão [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 National Laboratory JARA Universidad Pablo de Olavide |
dc.contributor.author.fl_str_mv |
Chen, Chen [UNESP] Krein, Gastão [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 Poincaré-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 first 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 Ξ, Ξ∗, and ω 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 2022-04-29T08:28:24Z 2022-04-29T08:28:24Z |
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, v. 100, n. 5, 2019. 2470-0029 2470-0010 http://hdl.handle.net/11449/228726 10.1103/PhysRevD.100.054009 2-s2.0-85072950133 |
url |
http://dx.doi.org/10.1103/PhysRevD.100.054009 http://hdl.handle.net/11449/228726 |
identifier_str_mv |
Physical Review D, v. 100, n. 5, 2019. 2470-0029 2470-0010 10.1103/PhysRevD.100.054009 2-s2.0-85072950133 |
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.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_ |
1808128350794809344 |