Scotogenic mechanism from an extended $\mathbf{SU}(2{)}_1\times \mathbf{SU}(2{)}_2\times \mathbf{U}(1{)}_{\mathbf{Y}}$ electroweak symmetry

Abstract

We propose an extension of the electroweak sector of the Standard Model in which the gauge group $SU(2{)}_L$ is promoted to $SU(2{)}_1\times SU(2{)}_2$. This framework naturally includes a viable dark matter candidate and generates neutrino masses radiatively à la Scotogenic. Our scenario can be viewed as an ultraviolet extension of the Scotogenic mechanism, addressing some of its shortcomings. The resulting phenomenology may be probed through a range of experimental signatures, from precision electroweak measurements to searches for lepton flavor violation.

31 pages, 5 figures