One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation

Autores
Herrero, M.J.; Marcano, X.; Morales, R.; Szynkman, Alejandro Andrés
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this paper we study the effective lepton flavor violating vertex of an electroweak Z gauge boson and two charged leptons with different flavor, lk and lm, that is generated to one-loop in low scale seesaw models with right handed neutrinos whose masses are heavier than the electroweak scale. We first compute the form factor describing this vertex by using the mass insertion approximation, where the flavor non-diagonal entries of the neutrino Yukawa coupling matrix are the unique origin, to one-loop level, of lepton flavor changing processes with charged leptons in the external legs. Then, by considering the proper large right handed neutrino mass expansion of the form factor, we derive a formula for the Zlklm effective vertex which is very simple and useful for fast phenomenological estimates. In the last part of this work we focus on the phenomenological applications of this vertex for simple and accurate estimates of the Z→ lkl¯ m decay rates. Concretely, this vertex will allow us to conclude easily on the maximum allowed decay rates by present data in the inverse seesaw model. The found rates are promising, at the reach of future lepton colliders.
Fil: Herrero, M.J.. Universidad Autónoma de Madrid; España
Fil: Marcano, X.. Université Paris Sud; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Morales, R.. Universidad Nacional de La Plata; Argentina
Fil: Szynkman, Alejandro Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Materia
LHC
LFV
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/100410
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximationHerrero, M.J.Marcano, X.Morales, R.Szynkman, Alejandro AndrésLHCLFVhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In this paper we study the effective lepton flavor violating vertex of an electroweak Z gauge boson and two charged leptons with different flavor, lk and lm, that is generated to one-loop in low scale seesaw models with right handed neutrinos whose masses are heavier than the electroweak scale. We first compute the form factor describing this vertex by using the mass insertion approximation, where the flavor non-diagonal entries of the neutrino Yukawa coupling matrix are the unique origin, to one-loop level, of lepton flavor changing processes with charged leptons in the external legs. Then, by considering the proper large right handed neutrino mass expansion of the form factor, we derive a formula for the Zlklm effective vertex which is very simple and useful for fast phenomenological estimates. In the last part of this work we focus on the phenomenological applications of this vertex for simple and accurate estimates of the Z→ lkl¯ m decay rates. Concretely, this vertex will allow us to conclude easily on the maximum allowed decay rates by present data in the inverse seesaw model. The found rates are promising, at the reach of future lepton colliders.Fil: Herrero, M.J.. Universidad Autónoma de Madrid; EspañaFil: Marcano, X.. Université Paris Sud; Francia. Centre National de la Recherche Scientifique; FranciaFil: Morales, R.. Universidad Nacional de La Plata; ArgentinaFil: Szynkman, Alejandro Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaSpringer2018-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100410Herrero, M.J.; Marcano, X.; Morales, R.; Szynkman, Alejandro Andrés; One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation; Springer; European Physical Journal C: Particles and Fields; 78; 10; 10-20181434-6044CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-018-6281-3info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-018-6281-3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:20:14Zoai:ri.conicet.gov.ar:11336/100410instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:20:14.673CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation
title One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation
spellingShingle One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation
Herrero, M.J.
LHC
LFV
title_short One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation
title_full One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation
title_fullStr One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation
title_full_unstemmed One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation
title_sort One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation
dc.creator.none.fl_str_mv Herrero, M.J.
Marcano, X.
Morales, R.
Szynkman, Alejandro Andrés
author Herrero, M.J.
author_facet Herrero, M.J.
Marcano, X.
Morales, R.
Szynkman, Alejandro Andrés
author_role author
author2 Marcano, X.
Morales, R.
Szynkman, Alejandro Andrés
author2_role author
author
author
dc.subject.none.fl_str_mv LHC
LFV
topic LHC
LFV
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this paper we study the effective lepton flavor violating vertex of an electroweak Z gauge boson and two charged leptons with different flavor, lk and lm, that is generated to one-loop in low scale seesaw models with right handed neutrinos whose masses are heavier than the electroweak scale. We first compute the form factor describing this vertex by using the mass insertion approximation, where the flavor non-diagonal entries of the neutrino Yukawa coupling matrix are the unique origin, to one-loop level, of lepton flavor changing processes with charged leptons in the external legs. Then, by considering the proper large right handed neutrino mass expansion of the form factor, we derive a formula for the Zlklm effective vertex which is very simple and useful for fast phenomenological estimates. In the last part of this work we focus on the phenomenological applications of this vertex for simple and accurate estimates of the Z→ lkl¯ m decay rates. Concretely, this vertex will allow us to conclude easily on the maximum allowed decay rates by present data in the inverse seesaw model. The found rates are promising, at the reach of future lepton colliders.
Fil: Herrero, M.J.. Universidad Autónoma de Madrid; España
Fil: Marcano, X.. Université Paris Sud; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Morales, R.. Universidad Nacional de La Plata; Argentina
Fil: Szynkman, Alejandro Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
description In this paper we study the effective lepton flavor violating vertex of an electroweak Z gauge boson and two charged leptons with different flavor, lk and lm, that is generated to one-loop in low scale seesaw models with right handed neutrinos whose masses are heavier than the electroweak scale. We first compute the form factor describing this vertex by using the mass insertion approximation, where the flavor non-diagonal entries of the neutrino Yukawa coupling matrix are the unique origin, to one-loop level, of lepton flavor changing processes with charged leptons in the external legs. Then, by considering the proper large right handed neutrino mass expansion of the form factor, we derive a formula for the Zlklm effective vertex which is very simple and useful for fast phenomenological estimates. In the last part of this work we focus on the phenomenological applications of this vertex for simple and accurate estimates of the Z→ lkl¯ m decay rates. Concretely, this vertex will allow us to conclude easily on the maximum allowed decay rates by present data in the inverse seesaw model. The found rates are promising, at the reach of future lepton colliders.
publishDate 2018
dc.date.none.fl_str_mv 2018-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/100410
Herrero, M.J.; Marcano, X.; Morales, R.; Szynkman, Alejandro Andrés; One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation; Springer; European Physical Journal C: Particles and Fields; 78; 10; 10-2018
1434-6044
CONICET Digital
CONICET
url http://hdl.handle.net/11336/100410
identifier_str_mv Herrero, M.J.; Marcano, X.; Morales, R.; Szynkman, Alejandro Andrés; One-loop effective LFV Zlklm vertex from heavy neutrinos within the mass insertion approximation; Springer; European Physical Journal C: Particles and Fields; 78; 10; 10-2018
1434-6044
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-018-6281-3
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-018-6281-3
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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