Scotogenic models are among the most popular possibilities to link dark matter
and neutrino masses. In this work we discuss a variant of the Scotogenic model
that includes charged fermions and a doublet with hypercharge 3/2. Neutrino
masses are induced at the one-loop level thanks to the states belonging to the dark sector. However, in contrast to the standard Scotogenic model, only the scalar dark matter candidate is viable in this version. After presenting the model and explaining some particularities about neutrino mass generation, we concentrate on its dark matter phenomenology. We show that the observed dark matter relic density can be correctly reproduced in the usual parameter space regions found for the standard Scotogenic model or the Inert Doublet model. In addition, the presence of the charged fermions may open up new regions, provided some tuning of the parameters is allowed.
|Reference to paper (DOI or arXiv)