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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/129532
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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 |
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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 |
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reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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Universidad Nacional de La Plata |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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alira@sedici.unlp.edu.ar |
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