Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei

Autores
Fontoura, C. E.; Krmpotić, Francisco; Galeão, A. P.; De Conti, C.; Krein, Gastão
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Having in mind its future extension for theoretical investigations related to charmed nuclei, we develop a relativistic formalism for the nonmesonic weak decay of single-Λ hypernuclei in the framework of the independent-particle shell model and with the dynamics represented by the (π, K) one-meson-exchange model. Numerical results for the one-nucleon-induced transition rates of Λ¹²C are presented and compared with those obtained in the analogous nonrelativistic calculation. There is satisfactory agreement between the two approaches, and the most noteworthy difference is that the ratio Γn/Γp is appreciably higher and closer to the experimental value in the relativistic calculation. Large discrepancies between ours and previous relativistic calculations are found, for which we do not encounter any fully satisfactory explanation. The most recent experimental data is well reproduced by our results. In summary, we have achieved our purpose to develop a reliable model for the relativistic calculation of the nonmesonic weak decay of Λ-hypernuclei, which can now be extended to evaluate similar processes in charmed nuclei.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Materia
Ciencias Exactas
Física
relativistic nuclear models
strange hypernuclei
charm hypernuclei
nonmesonic weak decay
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/127353
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/127353
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Relativistic model for the nonmesonic weak decay of single-lambda hypernucleiFontoura, C. E.Krmpotić, FranciscoGaleão, A. P.De Conti, C.Krein, GastãoCiencias ExactasFísicarelativistic nuclear modelsstrange hypernucleicharm hypernucleinonmesonic weak decayHaving in mind its future extension for theoretical investigations related to charmed nuclei, we develop a relativistic formalism for the nonmesonic weak decay of single-Λ hypernuclei in the framework of the independent-particle shell model and with the dynamics represented by the (π, K) one-meson-exchange model. Numerical results for the one-nucleon-induced transition rates of <sub>Λ</sub>¹²C are presented and compared with those obtained in the analogous nonrelativistic calculation. There is satisfactory agreement between the two approaches, and the most noteworthy difference is that the ratio Γ<sub>n</sub>/Γ<sub>p</sub> is appreciably higher and closer to the experimental value in the relativistic calculation. Large discrepancies between ours and previous relativistic calculations are found, for which we do not encounter any fully satisfactory explanation. The most recent experimental data is well reproduced by our results. In summary, we have achieved our purpose to develop a reliable model for the relativistic calculation of the nonmesonic weak decay of Λ-hypernuclei, which can now be extended to evaluate similar processes in charmed nuclei.Facultad de Ciencias ExactasInstituto de Física La Plata2016-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/127353enginfo:eu-repo/semantics/altIdentifier/issn/0954-3899info:eu-repo/semantics/altIdentifier/issn/1361-6471info:eu-repo/semantics/altIdentifier/arxiv/1507.01045info:eu-repo/semantics/altIdentifier/doi/10.1088/0954-3899/43/5/055102info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:30:42Zoai:sedici.unlp.edu.ar:10915/127353Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:43.287SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei
title Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei
spellingShingle Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei
Fontoura, C. E.
Ciencias Exactas
Física
relativistic nuclear models
strange hypernuclei
charm hypernuclei
nonmesonic weak decay
title_short Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei
title_full Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei
title_fullStr Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei
title_full_unstemmed Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei
title_sort Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei
dc.creator.none.fl_str_mv Fontoura, C. E.
Krmpotić, Francisco
Galeão, A. P.
De Conti, C.
Krein, Gastão
author Fontoura, C. E.
author_facet Fontoura, C. E.
Krmpotić, Francisco
Galeão, A. P.
De Conti, C.
Krein, Gastão
author_role author
author2 Krmpotić, Francisco
Galeão, A. P.
De Conti, C.
Krein, Gastão
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
relativistic nuclear models
strange hypernuclei
charm hypernuclei
nonmesonic weak decay
topic Ciencias Exactas
Física
relativistic nuclear models
strange hypernuclei
charm hypernuclei
nonmesonic weak decay
dc.description.none.fl_txt_mv Having in mind its future extension for theoretical investigations related to charmed nuclei, we develop a relativistic formalism for the nonmesonic weak decay of single-Λ hypernuclei in the framework of the independent-particle shell model and with the dynamics represented by the (π, K) one-meson-exchange model. Numerical results for the one-nucleon-induced transition rates of <sub>Λ</sub>¹²C are presented and compared with those obtained in the analogous nonrelativistic calculation. There is satisfactory agreement between the two approaches, and the most noteworthy difference is that the ratio Γ<sub>n</sub>/Γ<sub>p</sub> is appreciably higher and closer to the experimental value in the relativistic calculation. Large discrepancies between ours and previous relativistic calculations are found, for which we do not encounter any fully satisfactory explanation. The most recent experimental data is well reproduced by our results. In summary, we have achieved our purpose to develop a reliable model for the relativistic calculation of the nonmesonic weak decay of Λ-hypernuclei, which can now be extended to evaluate similar processes in charmed nuclei.
Facultad de Ciencias Exactas
Instituto de Física La Plata
description Having in mind its future extension for theoretical investigations related to charmed nuclei, we develop a relativistic formalism for the nonmesonic weak decay of single-Λ hypernuclei in the framework of the independent-particle shell model and with the dynamics represented by the (π, K) one-meson-exchange model. Numerical results for the one-nucleon-induced transition rates of <sub>Λ</sub>¹²C are presented and compared with those obtained in the analogous nonrelativistic calculation. There is satisfactory agreement between the two approaches, and the most noteworthy difference is that the ratio Γ<sub>n</sub>/Γ<sub>p</sub> is appreciably higher and closer to the experimental value in the relativistic calculation. Large discrepancies between ours and previous relativistic calculations are found, for which we do not encounter any fully satisfactory explanation. The most recent experimental data is well reproduced by our results. In summary, we have achieved our purpose to develop a reliable model for the relativistic calculation of the nonmesonic weak decay of Λ-hypernuclei, which can now be extended to evaluate similar processes in charmed nuclei.
publishDate 2016
dc.date.none.fl_str_mv 2016-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/127353
url http://sedici.unlp.edu.ar/handle/10915/127353
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0954-3899
info:eu-repo/semantics/altIdentifier/issn/1361-6471
info:eu-repo/semantics/altIdentifier/arxiv/1507.01045
info:eu-repo/semantics/altIdentifier/doi/10.1088/0954-3899/43/5/055102
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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