Displaced vertex signatures of a pseudo-Goldstone sterile neutrino

Low-scale models of neutrino mass generation often feature sterile neutrinos with masses in the GeV-TeV range, which can be produced at colliders through their mixing with the Standard Model neutrinos. We consider an alternative scenario in which the sterile neutrino is produced in the decay of a he...

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Detalles Bibliográficos
Autores principales: Lavignac, Stéphane, Medina, Aníbal Damián
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Física
Beyond standard model
Neutrino physics
Supersymmetric standard model
Supersymmetric effective theories
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123856
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123856
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Beyond standard model
Neutrino physics
Supersymmetric standard model
Supersymmetric effective theories
spellingShingle Física
Beyond standard model
Neutrino physics
Supersymmetric standard model
Supersymmetric effective theories
Lavignac, Stéphane
Medina, Aníbal Damián
Displaced vertex signatures of a pseudo-Goldstone sterile neutrino
topic_facet Física
Beyond standard model
Neutrino physics
Supersymmetric standard model
Supersymmetric effective theories
description Low-scale models of neutrino mass generation often feature sterile neutrinos with masses in the GeV-TeV range, which can be produced at colliders through their mixing with the Standard Model neutrinos. We consider an alternative scenario in which the sterile neutrino is produced in the decay of a heavier particle, such that its production cross section does not depend on the active-sterile neutrino mixing angles. The mixing angles can be accessed through the decays of the sterile neutrino, provided that they lead to observable displaced vertices. We present an explicit realization of this scenario in which the sterile neutrino is the supersymmetric partner of a pseudo-Nambu-Goldstone boson, and is produced in the decays of higgsino-like neutralinos and charginos. The model predicts the active-sterile neutrino mixing angles in terms of a small number of parameters. We show that a sterile neutrino with a mass between a few 10 GeV and 200 GeV can lead to observable displaced vertices at the LHC, and outline a strategy for reconstructing experimentally its mixing angles.
format Articulo
Articulo
author Lavignac, Stéphane
Medina, Aníbal Damián
author_facet Lavignac, Stéphane
Medina, Aníbal Damián
author_sort Lavignac, Stéphane
title Displaced vertex signatures of a pseudo-Goldstone sterile neutrino
title_short Displaced vertex signatures of a pseudo-Goldstone sterile neutrino
title_full Displaced vertex signatures of a pseudo-Goldstone sterile neutrino
title_fullStr Displaced vertex signatures of a pseudo-Goldstone sterile neutrino
title_full_unstemmed Displaced vertex signatures of a pseudo-Goldstone sterile neutrino
title_sort displaced vertex signatures of a pseudo-goldstone sterile neutrino
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/123856
work_keys_str_mv AT lavignacstephane displacedvertexsignaturesofapseudogoldstonesterileneutrino
AT medinaanibaldamian displacedvertexsignaturesofapseudogoldstonesterileneutrino
bdutipo_str Repositorios
_version_ 1764820450380087296

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