Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba

We calculate the nuclear matrix element for the two-neutrino ββ decay of 136Xe into the first excited state of 136Ba. We use different many-body methods: the quasiparticle random-phase approximation (QRPA) framework, the nuclear shell model, the interacting boson model (IBM-2), and an effective fiel...

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Autores: Jokiniemi, Lotta, Romeo, B., Brase, C., Kotila, J., Soriano, Pablo, Schwenk, A., Menéndez Sánchez, Javier
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/215265
Acesso em linha:https://hdl.handle.net/2445/215265
Access Level:acceso abierto
Palavra-chave:Neutrins
Física nuclear
Física de partícules
Neutrinos
Nuclear physics
Particle physics
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spelling Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136BaJokiniemi, LottaRomeo, B.Brase, C.Kotila, J.Soriano, PabloSchwenk, A.Menéndez Sánchez, JavierNeutrinsFísica nuclearFísica de partículesNeutrinosNuclear physicsParticle physicsWe calculate the nuclear matrix element for the two-neutrino ββ decay of 136Xe into the first excited state of 136Ba. We use different many-body methods: the quasiparticle random-phase approximation (QRPA) framework, the nuclear shell model, the interacting boson model (IBM-2), and an effective field theory (EFT) for β and ββ decays. While the QRPA suggests a decay rate at the edge of current experimental limits, the shell model points to a half-life about two orders of magnitude longer. The predictions of the IBM-2 and the EFT lie in between, and the latter provides systematic uncertainties at leading order. An analysis of the running sum of the nuclear matrix element indicates that subtle cancellations between the contributions of intermediate states can explain the different theoretical predictions. For the EFT, we also present results for two-neutrino ββ decays to the first excited state in other nuclei.Elsevier B.V.2024202420232024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion1 p.application/pdfhttps://hdl.handle.net/2445/215265Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1016/j.physletb.2023.137689Physics Letters B, 2023, vol. 838, p. 137689https://doi.org/10.1016/j.physletb.2023.137689cc-by (c) Jokiniemi, L. et al., 2023http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2152652026-05-29T05:05:01Z
dc.title.none.fl_str_mv Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba
title Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba
spellingShingle Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba
Jokiniemi, Lotta
Neutrins
Física nuclear
Física de partícules
Neutrinos
Nuclear physics
Particle physics
title_short Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba
title_full Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba
title_fullStr Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba
title_full_unstemmed Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba
title_sort Two-neutrino ββ decay of 136Xe to the first excited 0+ state in 136Ba
dc.creator.none.fl_str_mv Jokiniemi, Lotta
Romeo, B.
Brase, C.
Kotila, J.
Soriano, Pablo
Schwenk, A.
Menéndez Sánchez, Javier
author Jokiniemi, Lotta
author_facet Jokiniemi, Lotta
Romeo, B.
Brase, C.
Kotila, J.
Soriano, Pablo
Schwenk, A.
Menéndez Sánchez, Javier
author_role author
author2 Romeo, B.
Brase, C.
Kotila, J.
Soriano, Pablo
Schwenk, A.
Menéndez Sánchez, Javier
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Neutrins
Física nuclear
Física de partícules
Neutrinos
Nuclear physics
Particle physics
topic Neutrins
Física nuclear
Física de partícules
Neutrinos
Nuclear physics
Particle physics
description We calculate the nuclear matrix element for the two-neutrino ββ decay of 136Xe into the first excited state of 136Ba. We use different many-body methods: the quasiparticle random-phase approximation (QRPA) framework, the nuclear shell model, the interacting boson model (IBM-2), and an effective field theory (EFT) for β and ββ decays. While the QRPA suggests a decay rate at the edge of current experimental limits, the shell model points to a half-life about two orders of magnitude longer. The predictions of the IBM-2 and the EFT lie in between, and the latter provides systematic uncertainties at leading order. An analysis of the running sum of the nuclear matrix element indicates that subtle cancellations between the contributions of intermediate states can explain the different theoretical predictions. For the EFT, we also present results for two-neutrino ββ decays to the first excited state in other nuclei.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
2024
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/2445/215265
url https://hdl.handle.net/2445/215265
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.2023.137689
Physics Letters B, 2023, vol. 838, p. 137689
https://doi.org/10.1016/j.physletb.2023.137689
dc.rights.none.fl_str_mv cc-by (c) Jokiniemi, L. et al., 2023
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Jokiniemi, L. et al., 2023
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1 p.
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:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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