Scotogenic model with U(1) symmetry and a scalar dark matter

Abstract

We study a scotogenic model augmented with an additional U(1) gauge and a discrete Z2 symmetry. The lightest Z2-odd particle in our model becomes the dark matter (DM) candidate while tiny neutrino masses are realized at one loop. We explore the parameter space of the model for which the DM relic density is satisfied, and the correct low-energy neutrino observables are reproduced. The extended gauge symmetry includes a beyond Standard Model (SM) particle spectrum consisting of vectorlike fermions and scalars. We also highlight possible collider signatures of these particles at the LHC. Published by the American Physical Society 2025