SU(4)-flavor symmetry breaking in hadron couplings

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorKrein, Gastao-
Data de aceite: dc.date.accessioned2025-08-21T22:22:25Z-
Data de disponibilização: dc.date.available2025-08-21T22:22:25Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2012-12-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227300-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227300-
Descrição: dc.descriptionWe present results of two studies examining the accuracy of SU(4)-flavor symmetry relations between hadron couplings. Initially, we discuss results obtained with a 3P0 quark-pair creation model with hadron wave functions obtained from a nonrelativistic quark model. Next, we contrast the 3P0 results with those obtained in a framework in which all elements are constrained by studies of Dyson-Schwinger and Bethe-Salpeter equations in QCD. We focus on the three-meson couplings ρπ π, ρKK, and ρDD and meson-baryon couplings π NN, KΛN and DΛcN. Within the 3P0 model, we find that the SU(4) breaking is at most 30% in the charm sector, f or the three-meson and meson-baryon couplings. Within the relativistic Dyson-Schwinger-Bethe-Salpeter framework, the breaking is large in the charm sector, of the order of 300% for the three-meson couplings, but the predicted form factors are much softer than those usually used in meson-exchange models. Consequences of these findings for the predictions of DN cross-sections and of exotic nuclear bound states of J/ψ or heavy-light D and D* mesons are discussed. © Copyright owned by the author(s).-
Descrição: dc.descriptionU.S. Department of Energy-
Descrição: dc.descriptionInstituto de Fisica Teorica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271, 01140-070 São Paulo, SP-
Descrição: dc.descriptionInstituto de Fisica Teorica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271, 01140-070 São Paulo, SP-
Idioma: dc.languageen-
Relação: dc.relationProceedings of Science-
???dc.source???: dc.sourceScopus-
Título: dc.titleSU(4)-flavor symmetry breaking in hadron couplings-
Tipo de arquivo: dc.typeaula digital-
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