Revisiting the R ν MDM models

Combining neutrino mass generation and a dark matter candidate in a unified model has always been intriguing. we revisit the class of rνmdm models, which incorporate minimal dark matter in radiative neutrino mass models based on the one-loop ultraviolet completions of the weinberg operator. the possibility of an exact accidental z 2 is completely ruled out in this scenario. we study the phenomenology of one of the models with an approximate z 2 symmetry. in addition to the standard model particles, it contains two real scalar quintuplets, one vector-like quadruplet fermion and a fermionic quintuplet. the neutral component of the fermionic quintuplet serves as a good dark matter candidate which can be tested by the future direct and indirect detection experiments. the constraints from flavor physics and electroweak-scale naturalness are also discussed.