Dark Matter from a Radiative Inverse Seesaw Majoron Model

Abstract

We propose a Majoron-like extension of the Standard Model with an extra global $U(1{)}_X$-symmetry where neutrino masses are generated through an inverse seesaw mechanism at the 1-loop level. In contrast to the tree-level inverse seesaw, our framework contains dark matter (DM) candidates stabilized by a residual ${\mathcal{Z}}_2$-symmetry surviving spontaneous breaking of the $U(1{)}_X$-group. We explore the case in which the DM is a Majorana fermion. Furthermore, we provide parameter space regions allowed by current experimental constraints coming from the dark matter relic abundance, (in)direct detection, and charged lepton flavor violation.

Comments: 15 pages, 6 figures