Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model

We study the two-neutrino double electron capture on 124Xe based on an effective theory (ET) and large-scale shell model calculations, two modern nuclear structure approaches that have been tested against Gamow-Teller and double-beta decay data. In the ET, the low-energy constants are fit to electro...

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Detalhes bibliográficos
Autores: Coello Pérez, E.A., Menéndez Sánchez, Javier, Schwenk, A.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/215201
Acesso em linha:https://hdl.handle.net/2445/215201
Access Level:acceso abierto
Palavra-chave:Física de partícules
Neutrins
Estructura nuclear
Particle physics
Neutrinos
Nuclear structure
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spelling Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell modelCoello Pérez, E.A.Menéndez Sánchez, JavierSchwenk, A.Física de partículesNeutrinsEstructura nuclearParticle physicsNeutrinosNuclear structureWe study the two-neutrino double electron capture on 124Xe based on an effective theory (ET) and large-scale shell model calculations, two modern nuclear structure approaches that have been tested against Gamow-Teller and double-beta decay data. In the ET, the low-energy constants are fit to electron capture and transitions around xenon. For the nuclear shell model, we use an interaction in a large configuration space that reproduces the spectroscopy of nuclei in this mass region. For the dominant transition to the 124Te ground state, we find half-lives y for the ET and y for the shell model. The ET uncertainty leads to a half-life almost entirely consistent with present experimental limits and largely within the reach of ongoing experiments. The shell model half-life range overlaps with the ET, but extends less beyond current limits. Our findings thus suggest that the two-neutrino double electron capture on 124Xe has a good chance to be discovered by ongoing or future experiments. In addition, we present results for the two-neutrino double electron capture to excited states of 124Te.Elsevier B.V.2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/215201Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1016/j.physletb.2019.134885Physics Letters B, 2019, vol. 797, p. 134885https://doi.org/10.1016/j.physletb.2019.134885cc-by (c) E.A. Coello Pérez et al., 2019http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2152012026-05-27T06:46:51Z
dc.title.none.fl_str_mv Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
title Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
spellingShingle Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
Coello Pérez, E.A.
Física de partícules
Neutrins
Estructura nuclear
Particle physics
Neutrinos
Nuclear structure
title_short Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
title_full Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
title_fullStr Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
title_full_unstemmed Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
title_sort Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
dc.creator.none.fl_str_mv Coello Pérez, E.A.
Menéndez Sánchez, Javier
Schwenk, A.
author Coello Pérez, E.A.
author_facet Coello Pérez, E.A.
Menéndez Sánchez, Javier
Schwenk, A.
author_role author
author2 Menéndez Sánchez, Javier
Schwenk, A.
author2_role author
author
dc.subject.none.fl_str_mv Física de partícules
Neutrins
Estructura nuclear
Particle physics
Neutrinos
Nuclear structure
topic Física de partícules
Neutrins
Estructura nuclear
Particle physics
Neutrinos
Nuclear structure
description We study the two-neutrino double electron capture on 124Xe based on an effective theory (ET) and large-scale shell model calculations, two modern nuclear structure approaches that have been tested against Gamow-Teller and double-beta decay data. In the ET, the low-energy constants are fit to electron capture and transitions around xenon. For the nuclear shell model, we use an interaction in a large configuration space that reproduces the spectroscopy of nuclei in this mass region. For the dominant transition to the 124Te ground state, we find half-lives y for the ET and y for the shell model. The ET uncertainty leads to a half-life almost entirely consistent with present experimental limits and largely within the reach of ongoing experiments. The shell model half-life range overlaps with the ET, but extends less beyond current limits. Our findings thus suggest that the two-neutrino double electron capture on 124Xe has a good chance to be discovered by ongoing or future experiments. In addition, we present results for the two-neutrino double electron capture to excited states of 124Te.
publishDate 2019
dc.date.none.fl_str_mv 2019
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/2445/215201
url https://hdl.handle.net/2445/215201
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.physletb.2019.134885
Physics Letters B, 2019, vol. 797, p. 134885
https://doi.org/10.1016/j.physletb.2019.134885
dc.rights.none.fl_str_mv cc-by (c) E.A. Coello Pérez et al., 2019
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) E.A. Coello Pérez et al., 2019
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
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 15,812429

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