Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries

We study charged lepton flavour violation in a scenario in which light neutrino masses are generated via the inverse seesaw mechanism with 3+3 gauge singlet fermions, and , , = 1, 2, 3. Lepton mixing is predicted with the help of the flavour symmetries Δ(3 2) and Δ(6 2) combined with CP. In the neut...

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Detalles Bibliográficos
Autores: Di Meglio, F. P., Hagedorn, Claudia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::a98d80c291f1c12165f3fb1112803105
Acceso en línea:http://hdl.handle.net/10261/429518
https://api.elsevier.com/content/abstract/scopus_id/105010633699
Access Level:acceso abierto
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spelling Charged lepton flavour violation from inverse seesaw with flavour and CP symmetriesDi Meglio, F. P.Hagedorn, ClaudiaWe study charged lepton flavour violation in a scenario in which light neutrino masses are generated via the inverse seesaw mechanism with 3+3 gauge singlet fermions, and , , = 1, 2, 3. Lepton mixing is predicted with the help of the flavour symmetries Δ(3 2) and Δ(6 2) combined with CP. In the neutral lepton sector, the non-trivial flavour structure is only encoded in the Dirac neutrino Yukawa matrix (the coupling relating left-handed lepton doublets and gauge singlets ). Current experimental bounds on the processes → , → 3 , − conversion in nuclei and the tau lepton decays → and → 3, = , , do not constrain the considered parameter space of this scenario. Prospective limits on the decay → 3 and − conversion in aluminium instead can markedly reduce the available parameter space. We also comment on the effects of the heavy sterile states on light neutrino masses and lepton mixing.This work is supported by the Spanish MINECO through the Ramón y Cajal programme RYC2018-024529-I, the FPI fellowship PRE2021-098730, by the national grant PID2020-113644GB-I00, by the Generalitat Valenciana through PROMETEO/2021/083 as well as by the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 860881 (HIDDeν network) and under the Marie Skłodowska-Curie Staff Exchange grant agreement No. 101086085 (ASYMMETRY).Peer reviewedElsevierMinisterio de Economía y Competitividad (España)Generalitat ValencianaEuropean CommissionHagedorn, Claudia [0000-0002-1745-5058]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/429518https://api.elsevier.com/content/abstract/scopus_id/105010633699reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113644GB-I00http://dx.doi.org/10.1016/j.nuclphysb.2025.117020Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::a98d80c291f1c12165f3fb11128031052026-05-22T06:33:51Z
dc.title.none.fl_str_mv Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
title Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
spellingShingle Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
Di Meglio, F. P.
title_short Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
title_full Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
title_fullStr Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
title_full_unstemmed Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
title_sort Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
dc.creator.none.fl_str_mv Di Meglio, F. P.
Hagedorn, Claudia
author Di Meglio, F. P.
author_facet Di Meglio, F. P.
Hagedorn, Claudia
author_role author
author2 Hagedorn, Claudia
author2_role author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Generalitat Valenciana
European Commission
Hagedorn, Claudia [0000-0002-1745-5058]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description We study charged lepton flavour violation in a scenario in which light neutrino masses are generated via the inverse seesaw mechanism with 3+3 gauge singlet fermions, and , , = 1, 2, 3. Lepton mixing is predicted with the help of the flavour symmetries Δ(3 2) and Δ(6 2) combined with CP. In the neutral lepton sector, the non-trivial flavour structure is only encoded in the Dirac neutrino Yukawa matrix (the coupling relating left-handed lepton doublets and gauge singlets ). Current experimental bounds on the processes → , → 3 , − conversion in nuclei and the tau lepton decays → and → 3, = , , do not constrain the considered parameter space of this scenario. Prospective limits on the decay → 3 and − conversion in aluminium instead can markedly reduce the available parameter space. We also comment on the effects of the heavy sterile states on light neutrino masses and lepton mixing.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
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info:eu-repo/semantics/publishedVersion
format article
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/429518
https://api.elsevier.com/content/abstract/scopus_id/105010633699
url http://hdl.handle.net/10261/429518
https://api.elsevier.com/content/abstract/scopus_id/105010633699
dc.language.none.fl_str_mv Inglés
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113644GB-I00
http://dx.doi.org/10.1016/j.nuclphysb.2025.117020
Sí
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publisher.none.fl_str_mv Elsevier
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instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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