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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/100410
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oai:ri.conicet.gov.ar:11336/100410 |
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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 Técnicas2025-09-29T09:32:20Zoai: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:34982025-09-29 09:32:20.505CONICET 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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1844612985590382592 |
score |
13.070432 |