Fermion mass hierarchy in an extended left-right symmetric model
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Archivos
Fecha
2023-12
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
Springer Science and Business Media Deutschland GmbH
Nombre de Curso
Licencia CC
CC BY 4.0 ATTRIBUTION 4.0 INTERNATIONAL
Licencia CC
https://creativecommons.org/licenses/by/4.0/
Resumen
We present a Left-Right symmetric model that provides an explanation for the mass hierarchy of the charged fermions within the framework of the Standard Model. This explanation is achieved through the utilization of both tree-level and radiative seesaw mechanisms. In this model, the tiny masses of the light active neutrinos are generated via a three-loop radiative inverse seesaw mechanism, with Dirac and Majorana submatrices arising at one-loop level. To the best of our knowledge, this is the first example of the inverse seesaw mechanism being implemented with both submatrices generated at one- loop level. The model contains a global U(1) X symmetry which, after its spontaneous breaking, allows for the stabilization of the Dark Matter (DM) candidates. We show that the electroweak precision observables, the electron and muon anomalous magnetic moments as well as the Charged Lepton Flavor Violating decays, μ → eγ, are consistent with the current experimental limits. In addition, we analyze the implications of the model for the 95 GeV diphoton excess recently reported by the CMS collaboration and demonstrate that such anomaly could be easily accommodated. Finally, we discuss qualitative aspects of DM in the considered model.
Notas
Indexación: Scopus.
Palabras clave
Flavour Symmetries, Left-Right Models, Multi-Higgs Models, Sterile or Heavy Neutrinos
Citación
Journal of High Energy Physics Open Access Volume 2023, Issue 12 December 2023 Article number 75
DOI
10.1007/JHEP12(2023)075