Fermionic WIMPs and Vacuum Stability in the Scotogenic Model

Abstract

We demonstrate that the condition of vacuum stability severely restricts scenarios with fermionic WIMP dark matter in the scotogenic model. The sizable Yukawa couplings that are required to satisfy the dark matter constraint via thermal freeze-out in these scenarios tend to destabilise the vacuum at scales below that of the heaviest singlet fermion, rendering the model inconsistent from a theoretical point of view. By means of a scan over the parameter space, we study the impact of these renormalisation group effects on the viable regions of this model. Our analysis shows that a fraction of more than 90% of the points compatible with all known experimental constraints - including neutrino masses, the dark matter density, and lepton flavour violation - is actually inconsistent.

8 pages, 6 figures; content matches published version

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Cited by in corpus (4)

• From the trees to the forest: a review of radiative neutrino mass models
• Influence of an inert charged Higgs boson on the muon $g-2$ and radiative neutrino masses in a scotogenic model
• Predictive Scotogenic Model with Flavor Dependent Symmetry
• Possible roles of Peccei-Quinn symmetry in an effective low energy model