Nonmesonic weak decay spectra of 4/ʌ He

Autores
Bauer, Eduardo; Galeao, A. P.; Hussein, M. S.; Krmpotić, Francisco; Parker, Joseph D.
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
To comprehend the recent Brookhaven National Laboratory experiment E788 on He Λ 4, we have outlined a simple theoretical framework, based on the independent-particle shell model, for the one-nucleon-induced nonmesonic weak decay spectra. Basically, the shapes of all the spectra are tailored by the kinematics of the corresponding phase space, depending very weakly on the dynamics, which is gauged here by the one-meson-exchange potential. In spite of the straightforwardness of the approach a good agreement with data is achieved. This might be an indication that the final-state-interactions and the two-nucleon induced processes are not very important in the decay of this hypernucleus. We have also found that the π + K exchange potential with soft vertex-form-factor cutoffs (Λ π ≈ 0.7 GeV, Λ K ≈ 0.9 GeV ), is able to account simultaneously for the available experimental data related to Γ p and Γ n for H Λ 4, He Λ 4, and He Λ 5.
Facultad de Ciencias Exactas
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Física
Nonmesonic decay
One-nucleon spectra
Two-nucleon spectra
One-meson-exchange model
s-Shell hypernuclei
Independent-particle shell model
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/129532

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network_name_str SEDICI (UNLP)
spelling Nonmesonic weak decay spectra of 4/ʌ HeBauer, EduardoGaleao, A. P.Hussein, M. S.Krmpotić, FranciscoParker, Joseph D.FísicaNonmesonic decayOne-nucleon spectraTwo-nucleon spectraOne-meson-exchange models-Shell hypernucleiIndependent-particle shell modelTo comprehend the recent Brookhaven National Laboratory experiment E788 on He Λ 4, we have outlined a simple theoretical framework, based on the independent-particle shell model, for the one-nucleon-induced nonmesonic weak decay spectra. Basically, the shapes of all the spectra are tailored by the kinematics of the corresponding phase space, depending very weakly on the dynamics, which is gauged here by the one-meson-exchange potential. In spite of the straightforwardness of the approach a good agreement with data is achieved. This might be an indication that the final-state-interactions and the two-nucleon induced processes are not very important in the decay of this hypernucleus. We have also found that the π + K exchange potential with soft vertex-form-factor cutoffs (Λ π ≈ 0.7 GeV, Λ K ≈ 0.9 GeV ), is able to account simultaneously for the available experimental data related to Γ p and Γ n for H Λ 4, He Λ 4, and He Λ 5.Facultad de Ciencias ExactasFacultad de Ciencias Astronómicas y Geofísicas2009info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf103-110http://sedici.unlp.edu.ar/handle/10915/129532enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/arxiv/0808.0531info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2009.01.072info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:17Zoai:sedici.unlp.edu.ar:10915/129532Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:17.762SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Nonmesonic weak decay spectra of 4/ʌ He
title Nonmesonic weak decay spectra of 4/ʌ He
spellingShingle Nonmesonic weak decay spectra of 4/ʌ He
Bauer, Eduardo
Física
Nonmesonic decay
One-nucleon spectra
Two-nucleon spectra
One-meson-exchange model
s-Shell hypernuclei
Independent-particle shell model
title_short Nonmesonic weak decay spectra of 4/ʌ He
title_full Nonmesonic weak decay spectra of 4/ʌ He
title_fullStr Nonmesonic weak decay spectra of 4/ʌ He
title_full_unstemmed Nonmesonic weak decay spectra of 4/ʌ He
title_sort Nonmesonic weak decay spectra of 4/ʌ He
dc.creator.none.fl_str_mv Bauer, Eduardo
Galeao, A. P.
Hussein, M. S.
Krmpotić, Francisco
Parker, Joseph D.
author Bauer, Eduardo
author_facet Bauer, Eduardo
Galeao, A. P.
Hussein, M. S.
Krmpotić, Francisco
Parker, Joseph D.
author_role author
author2 Galeao, A. P.
Hussein, M. S.
Krmpotić, Francisco
Parker, Joseph D.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Física
Nonmesonic decay
One-nucleon spectra
Two-nucleon spectra
One-meson-exchange model
s-Shell hypernuclei
Independent-particle shell model
topic Física
Nonmesonic decay
One-nucleon spectra
Two-nucleon spectra
One-meson-exchange model
s-Shell hypernuclei
Independent-particle shell model
dc.description.none.fl_txt_mv To comprehend the recent Brookhaven National Laboratory experiment E788 on He Λ 4, we have outlined a simple theoretical framework, based on the independent-particle shell model, for the one-nucleon-induced nonmesonic weak decay spectra. Basically, the shapes of all the spectra are tailored by the kinematics of the corresponding phase space, depending very weakly on the dynamics, which is gauged here by the one-meson-exchange potential. In spite of the straightforwardness of the approach a good agreement with data is achieved. This might be an indication that the final-state-interactions and the two-nucleon induced processes are not very important in the decay of this hypernucleus. We have also found that the π + K exchange potential with soft vertex-form-factor cutoffs (Λ π ≈ 0.7 GeV, Λ K ≈ 0.9 GeV ), is able to account simultaneously for the available experimental data related to Γ p and Γ n for H Λ 4, He Λ 4, and He Λ 5.
Facultad de Ciencias Exactas
Facultad de Ciencias Astronómicas y Geofísicas
description To comprehend the recent Brookhaven National Laboratory experiment E788 on He Λ 4, we have outlined a simple theoretical framework, based on the independent-particle shell model, for the one-nucleon-induced nonmesonic weak decay spectra. Basically, the shapes of all the spectra are tailored by the kinematics of the corresponding phase space, depending very weakly on the dynamics, which is gauged here by the one-meson-exchange potential. In spite of the straightforwardness of the approach a good agreement with data is achieved. This might be an indication that the final-state-interactions and the two-nucleon induced processes are not very important in the decay of this hypernucleus. We have also found that the π + K exchange potential with soft vertex-form-factor cutoffs (Λ π ≈ 0.7 GeV, Λ K ≈ 0.9 GeV ), is able to account simultaneously for the available experimental data related to Γ p and Γ n for H Λ 4, He Λ 4, and He Λ 5.
publishDate 2009
dc.date.none.fl_str_mv 2009
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/10915/129532
url http://sedici.unlp.edu.ar/handle/10915/129532
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/arxiv/0808.0531
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2009.01.072
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
103-110
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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