Phenomenology of an Asymmetric Scotogenic Model

The discovery of neutrino oscillations i.e. the discovery of neutrino mass, and progress of other experimental observation motivate us to develop models that can address multiple beyond Standard model issues that can be tested using present and future experiments. One such economic model is Ma’s Scotogenic model, which generates Majorana neutrino mass at 1-loop level and includes a dark matter candidate. We present a new variation of the Scotogenic model, which has an asymmetric loop contributing to neutrino masses unlike in the other variations of the Scotogenic model. Our \(Z_4\) symmetric Scotogenic model preserves divergence cancellation of the original \(Z_2\) model but generalizes the structure of the Feynman diagram, not requiring symmetry between the right and left side of the Feynman loop. To generate a non vanishing contribution to neutrino mass we break \(Z_4\) symmetry going to \(Z_2\) symmetry via a new singlet SU(2) scalar taking a VEV. We further discuss lepton flavour violation, dark matter freeze out and other constraints applying the latest experimental results to constrain our model and provide a viable parameter space.