Naturally light neutrinos in Diracon model

Bonilla, Cesar; Valle, Jose W. F.

Abstract

We propose a simple model for Dirac neutrinos where the smallness of neutrino mass follows from a parameter kappa whose absence enhances the symmetry of the theory. Symmetry breaking is performed in a two-doublet Higgs sector supplemented by a gauge singlet scalar, realizing an accidental global U(1) symmetry. Its spontaneous breaking at the few TeV scale leads to a physical Nambu -Goldstone - boson the Diracon, denoted D - which is restricted by astrophysics and induces invisible Higgs decays such as h -> DD. The scheme provides a rich, yet very simple scenario for symmetry breaking studies at colliders such as the LHC. (C) 2016 The Authors. Published by Elsevier B.V.

Más información

Título según WOS: ID WOS:000388473700022 Not found in local WOS DB
Título de la Revista: PHYSICS LETTERS B
Volumen: 762
Editorial: Elsevier
Fecha de publicación: 2016
Página de inicio: 162
Página final: 165
DOI:

10.1016/j.physletb.2016.09.022

Notas: ISI