A Class of Inert N-tuplet Models with Radiative Neutrino Mass and Dark Matter

Understand

We present a class of models with radiative neutrino mass and stable dark-matter candidates.

• Neutrino mass is generated by a one-loop diagram with the same topography as Ma's 2006 proposal (which used an inert scalar-doublet and singlet fermion).
• We generalize this approach and determine all variants with new fields no larger than the adjoint representation.
• When the neutrino mass diagram contains a Majorana mass insertion there are two possibilities, both of which are known.