Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei

We evaluate all nuclear matrix elements (NMEs) up to next-to-next-to leading order (N 2 LO) in chiral effective field theory ( χ EFT) for the neutrinoless double-beta ( 0νββ ) decay of the nuclei most relevant for experiments, including 76 Ge, 100 Mo, and 136 Xe. We use the proton-neutron quasiparti...

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Autores: Castillo, Daniel, Jokiniemi, Lotta, Soriano, Pablo, Menéndez Sánchez, Javier
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/218380
Acceso en línea:https://hdl.handle.net/2445/218380
Access Level:acceso abierto
Palabra clave:Leptons (Física nuclear)
Neutrins
Leptons (Nuclear physics)
Neutrinos
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spelling Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nucleiCastillo, DanielJokiniemi, LottaSoriano, PabloMenéndez Sánchez, JavierLeptons (Física nuclear)NeutrinsLeptons (Nuclear physics)NeutrinosWe evaluate all nuclear matrix elements (NMEs) up to next-to-next-to leading order (N 2 LO) in chiral effective field theory ( χ EFT) for the neutrinoless double-beta ( 0νββ ) decay of the nuclei most relevant for experiments, including 76 Ge, 100 Mo, and 136 Xe. We use the proton-neutron quasiparticle random-phase approximation (pnQRPA) and the nuclear shell model to calculate the N 2 LO NMEs from very low-momentum (ultrasoft) neutrinos and from loop diagrams usually neglected in 0νββ studies. Our results indicate that the overall N 2 LO contribution is centered around −(5 - 10)% for the shell model and +(10 - 15)% for the pnQRPA, with sizable uncertainties due to the scale dependence of the ultrasoft NMEs and the short-range nature of the loop NMEs. The sign discrepancy between many-body methods is common to all studied nuclei and points to the different behavior of the intermediate states of the 0νββ decay. Within uncertainties, our results for the ultrasoft NME are of similar size as contributions usually referred to as ``beyond the closure approximation''.Elsevier B.V.2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/218380Articles 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.2024.139181Physics Letters B, 2024, vol. 860, p. 139181https://doi.org/10.1016/j.physletb.2024.139181cc-by (c) Castillo, D. et al., 2024http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2183802026-05-27T06:46:51Z
dc.title.none.fl_str_mv Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei
title Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei
spellingShingle Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei
Castillo, Daniel
Leptons (Física nuclear)
Neutrins
Leptons (Nuclear physics)
Neutrinos
title_short Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei
title_full Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei
title_fullStr Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei
title_full_unstemmed Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei
title_sort Neutrinoless ββ decay nuclear matrix elements complete up to N2LO in heavy nuclei
dc.creator.none.fl_str_mv Castillo, Daniel
Jokiniemi, Lotta
Soriano, Pablo
Menéndez Sánchez, Javier
author Castillo, Daniel
author_facet Castillo, Daniel
Jokiniemi, Lotta
Soriano, Pablo
Menéndez Sánchez, Javier
author_role author
author2 Jokiniemi, Lotta
Soriano, Pablo
Menéndez Sánchez, Javier
author2_role author
author
author
dc.subject.none.fl_str_mv Leptons (Física nuclear)
Neutrins
Leptons (Nuclear physics)
Neutrinos
topic Leptons (Física nuclear)
Neutrins
Leptons (Nuclear physics)
Neutrinos
description We evaluate all nuclear matrix elements (NMEs) up to next-to-next-to leading order (N 2 LO) in chiral effective field theory ( χ EFT) for the neutrinoless double-beta ( 0νββ ) decay of the nuclei most relevant for experiments, including 76 Ge, 100 Mo, and 136 Xe. We use the proton-neutron quasiparticle random-phase approximation (pnQRPA) and the nuclear shell model to calculate the N 2 LO NMEs from very low-momentum (ultrasoft) neutrinos and from loop diagrams usually neglected in 0νββ studies. Our results indicate that the overall N 2 LO contribution is centered around −(5 - 10)% for the shell model and +(10 - 15)% for the pnQRPA, with sizable uncertainties due to the scale dependence of the ultrasoft NMEs and the short-range nature of the loop NMEs. The sign discrepancy between many-body methods is common to all studied nuclei and points to the different behavior of the intermediate states of the 0νββ decay. Within uncertainties, our results for the ultrasoft NME are of similar size as contributions usually referred to as ``beyond the closure approximation''.
publishDate 2024
dc.date.none.fl_str_mv 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/2445/218380
url https://hdl.handle.net/2445/218380
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.2024.139181
Physics Letters B, 2024, vol. 860, p. 139181
https://doi.org/10.1016/j.physletb.2024.139181
dc.rights.none.fl_str_mv cc-by (c) Castillo, D. et al., 2024
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Castillo, D. et al., 2024
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 15,811543

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