Nonmesonic weak decay of the hypertriton

The nonmesonic decay of the hypertriton is calculated based on a hypertriton wave function and 3N scattering states, which are rigorous solutions of three-body Faddeev equations using realistic NN and hyperon-nucleon interactions. The pion exchange together with heavier meson exchanges for the {Lamb...

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Autores: Bennhold, Cornelius, Ramos Gómez, Àngels, Aruliah, D. A., Oelfke, U.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:1992
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/12233
Acesso em linha:https://hdl.handle.net/2445/12233
Access Level:acceso abierto
Palavra-chave:Estructura nuclear
Desintegració radioactiva
Mesons (Física nuclear)
Interaccions febles (Física nuclear)
Nuclear structure
Radioactive decay
Mesons
Weak interactions (Nuclear physics)
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spelling Nonmesonic weak decay of the hypertritonBennhold, CorneliusRamos Gómez, ÀngelsAruliah, D. A.Oelfke, U.Estructura nuclearDesintegració radioactivaMesons (Física nuclear)Interaccions febles (Física nuclear)Nuclear structureRadioactive decayMesonsWeak interactions (Nuclear physics)The nonmesonic decay of the hypertriton is calculated based on a hypertriton wave function and 3N scattering states, which are rigorous solutions of three-body Faddeev equations using realistic NN and hyperon-nucleon interactions. The pion exchange together with heavier meson exchanges for the {Lambda}N{r_arrow}NN transition is considered. The total nonmesonic decay rate is found to be 0.5{percent} of the free {Lambda} decay rate. Integrated as well as differential decay rates are given. The p- and n-induced decays are discussed thoroughly and it is shown that the corresponding total rates cannot be measured individually.The nonmesonic weak decay of 3 Λ H is evaluated microscopically in the pion exchange model. The correlated three-body wave function of the hypertriton is approximated by a bound Λ-deuteron system obtained by averaging the YN interaction over the deuteron wave function. The relevant matrix elements are calculated in momentum space. The resulting decay rate is 4.9% of the free Λ decay rate.The American Physical Society1992info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/12233Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.45.947Physical Review C, 1992, vol. 45, núm. 3, p. 947-951http://dx.doi.org/10.1103/PhysRevC.45.947(c) The American Physical Society, 1992info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/122332026-05-27T06:46:51Z
dc.title.none.fl_str_mv Nonmesonic weak decay of the hypertriton
title Nonmesonic weak decay of the hypertriton
spellingShingle Nonmesonic weak decay of the hypertriton
Bennhold, Cornelius
Estructura nuclear
Desintegració radioactiva
Mesons (Física nuclear)
Interaccions febles (Física nuclear)
Nuclear structure
Radioactive decay
Mesons
Weak interactions (Nuclear physics)
title_short Nonmesonic weak decay of the hypertriton
title_full Nonmesonic weak decay of the hypertriton
title_fullStr Nonmesonic weak decay of the hypertriton
title_full_unstemmed Nonmesonic weak decay of the hypertriton
title_sort Nonmesonic weak decay of the hypertriton
dc.creator.none.fl_str_mv Bennhold, Cornelius
Ramos Gómez, Àngels
Aruliah, D. A.
Oelfke, U.
author Bennhold, Cornelius
author_facet Bennhold, Cornelius
Ramos Gómez, Àngels
Aruliah, D. A.
Oelfke, U.
author_role author
author2 Ramos Gómez, Àngels
Aruliah, D. A.
Oelfke, U.
author2_role author
author
author
dc.subject.none.fl_str_mv Estructura nuclear
Desintegració radioactiva
Mesons (Física nuclear)
Interaccions febles (Física nuclear)
Nuclear structure
Radioactive decay
Mesons
Weak interactions (Nuclear physics)
topic Estructura nuclear
Desintegració radioactiva
Mesons (Física nuclear)
Interaccions febles (Física nuclear)
Nuclear structure
Radioactive decay
Mesons
Weak interactions (Nuclear physics)
description The nonmesonic decay of the hypertriton is calculated based on a hypertriton wave function and 3N scattering states, which are rigorous solutions of three-body Faddeev equations using realistic NN and hyperon-nucleon interactions. The pion exchange together with heavier meson exchanges for the {Lambda}N{r_arrow}NN transition is considered. The total nonmesonic decay rate is found to be 0.5{percent} of the free {Lambda} decay rate. Integrated as well as differential decay rates are given. The p- and n-induced decays are discussed thoroughly and it is shown that the corresponding total rates cannot be measured individually.
publishDate 1992
dc.date.none.fl_str_mv 1992
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/12233
url https://hdl.handle.net/2445/12233
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.45.947
Physical Review C, 1992, vol. 45, núm. 3, p. 947-951
http://dx.doi.org/10.1103/PhysRevC.45.947
dc.rights.none.fl_str_mv (c) The American Physical Society, 1992
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The American Physical Society, 1992
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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