Neutrinoless double beta decay rates in the presence of light sterile neutrinos

We investigate neutrinoless double-beta decay (0νββ) in minimal extensions of the Standard Model of particle physics where gauge-singlet right-handed neutrinos give rise to Dirac and Majorana neutrino mass terms. We argue that the standard treatment of these scenarios, based on mass-dependent nuclea...

ver descrição completa

Detalhes bibliográficos
Autores: Dekens, W., de Vries, Jan, Castillo, Daniel, Mereghetti, E., Menéndez Sánchez, Javier, Plakkot, V., Soriano, Pablo, Zhou, G.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2024
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:2445/218379
Acesso em linha:https://hdl.handle.net/2445/218379
Access Level:acceso abierto
Palavra-chave:Neutrins
Física nuclear
Física de partícules
Neutrinos
Nuclear physics
Particle physics
id ES_562db4bb012baf4a7ccdfadb0119bda4
oai_identifier_str oai:recercat.cat:2445/218379
network_acronym_str ES
network_name_str España
repository_id_str
spelling Neutrinoless double beta decay rates in the presence of light sterile neutrinosDekens, W.de Vries, JanCastillo, DanielMereghetti, E.Menéndez Sánchez, JavierPlakkot, V.Soriano, PabloZhou, G.NeutrinsFísica nuclearFísica de partículesNeutrinosNuclear physicsParticle physicsWe investigate neutrinoless double-beta decay (0νββ) in minimal extensions of the Standard Model of particle physics where gauge-singlet right-handed neutrinos give rise to Dirac and Majorana neutrino mass terms. We argue that the standard treatment of these scenarios, based on mass-dependent nuclear matrix elements, is missing important contributions to the 0νββ amplitude. First, new effects arise from the exchange of neutrinos with very small (ultrasoft) momenta, for which we compute the associated nuclear matrix elements for the decays of 76 Ge and 136 Xe. These contributions can ominate the 0νββ rate in cases with light sterile neutrinos. The ultrasoft terms are also relevant in the more standard scenario of just three light Majorana neutrinos where they lead to a 10% reduction of the total 0νββ amplitude. Secondly, we highlight the importance of short-range terms associated with medium-heavy sterile neutrinos and provide explicit formulae that can be used in phenomenological analyses. As examples we discuss impact of these new effects in several explicit scenarios, including a realistic 3 + 2 model with two right-handed gauge-singlet neutrinos.Springer Verlag2025202520242025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion1 p.application/pdfhttps://hdl.handle.net/2445/218379Articles 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/10.1007/JHEP09(2024)201Journal of High Energy Physics, 2024, vol. 09https://doi.org/10.1007/JHEP09(2024)201cc-by (c) Dekens, W. et al., 2024http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2183792026-05-29T05:05:01Z
dc.title.none.fl_str_mv Neutrinoless double beta decay rates in the presence of light sterile neutrinos
title Neutrinoless double beta decay rates in the presence of light sterile neutrinos
spellingShingle Neutrinoless double beta decay rates in the presence of light sterile neutrinos
Dekens, W.
Neutrins
Física nuclear
Física de partícules
Neutrinos
Nuclear physics
Particle physics
title_short Neutrinoless double beta decay rates in the presence of light sterile neutrinos
title_full Neutrinoless double beta decay rates in the presence of light sterile neutrinos
title_fullStr Neutrinoless double beta decay rates in the presence of light sterile neutrinos
title_full_unstemmed Neutrinoless double beta decay rates in the presence of light sterile neutrinos
title_sort Neutrinoless double beta decay rates in the presence of light sterile neutrinos
dc.creator.none.fl_str_mv Dekens, W.
de Vries, Jan
Castillo, Daniel
Mereghetti, E.
Menéndez Sánchez, Javier
Plakkot, V.
Soriano, Pablo
Zhou, G.
author Dekens, W.
author_facet Dekens, W.
de Vries, Jan
Castillo, Daniel
Mereghetti, E.
Menéndez Sánchez, Javier
Plakkot, V.
Soriano, Pablo
Zhou, G.
author_role author
author2 de Vries, Jan
Castillo, Daniel
Mereghetti, E.
Menéndez Sánchez, Javier
Plakkot, V.
Soriano, Pablo
Zhou, G.
author2_role author
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 investigate neutrinoless double-beta decay (0νββ) in minimal extensions of the Standard Model of particle physics where gauge-singlet right-handed neutrinos give rise to Dirac and Majorana neutrino mass terms. We argue that the standard treatment of these scenarios, based on mass-dependent nuclear matrix elements, is missing important contributions to the 0νββ amplitude. First, new effects arise from the exchange of neutrinos with very small (ultrasoft) momenta, for which we compute the associated nuclear matrix elements for the decays of 76 Ge and 136 Xe. These contributions can ominate the 0νββ rate in cases with light sterile neutrinos. The ultrasoft terms are also relevant in the more standard scenario of just three light Majorana neutrinos where they lead to a 10% reduction of the total 0νββ amplitude. Secondly, we highlight the importance of short-range terms associated with medium-heavy sterile neutrinos and provide explicit formulae that can be used in phenomenological analyses. As examples we discuss impact of these new effects in several explicit scenarios, including a realistic 3 + 2 model with two right-handed gauge-singlet neutrinos.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
2025
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/2445/218379
url https://hdl.handle.net/2445/218379
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/10.1007/JHEP09(2024)201
Journal of High Energy Physics, 2024, vol. 09
https://doi.org/10.1007/JHEP09(2024)201
dc.rights.none.fl_str_mv cc-by (c) Dekens, W. et al., 2024
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Dekens, W. et al., 2024
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 Springer Verlag
publisher.none.fl_str_mv Springer Verlag
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
_version_ 1869408361008594944
score 15,811543

Registos relacionados