PT Journal
AU Bonilla, C
   Ma, E
   Peinado, E
   Valle, JWF
TI Two-loop Dirac neutrino mass and WIMP dark matter
SO Physics Letters B
JI Phys. Lett. B
PY 2016
BP 214
EP 218
VL 762
DI 10.1016/j.physletb.2016.09.027
LA English
DE Neutrino masses and mixing; Dark matter stability
AB 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.
ER