Two-loop Dirac neutrino mass and WIMP dark matter

Bonillaa, Cesar; Ma, Ernest; Peinado, Eduardo; Valle, Jose W. F.

Abstract

We propose a "scotogenic" mechanism relating small neutrino mass and cosmological dark matter. Neutrinos are Dirac fermions with masses arising only in two-loop order through the sector responsible for dark matter. Two triality symmetries ensure both dark matter stability and strict lepton number conservation at higher orders. A global spontaneously broken U(1) symmetry leads to a physical Diraconthat induces invisible Higgs decays which add up to the Higgs to dark matter mode. This enhances sensitivities to spin-independent WIMP dark matter search below m(h)/2. (C) 2016 The Authors. Published by Elsevier B.V.

Más información

Título según WOS: ID WOS:000388473700029 Not found in local WOS DB
Título de la Revista: PHYSICS LETTERS B
Volumen: 762
Editorial: Elsevier
Fecha de publicación: 2016
Página de inicio: 214
Página final: 218
DOI:

10.1016/j.physletb.2016.09.027

Notas: ISI