New U(1) Gauge Model of Radiative Lepton Masses with Sterile Neutrino and Dark Matter
arXiv:1512.05491 · doi:10.1016/j.physletb.2016.02.039
Abstract
An anomaly-free U(1) gauge extension of the standard model (SM) is presented. Only one Higgs doublet with a nonzero vacuum expectation is required as in the SM. New fermions and scalars as well as all SM particles transform nontrivially under this U(1), resulting in a model of three active neutrinos and one sterile neutrino, all acquiring radiative masses. Charged-lepton masses are also radiative as well as the mixing between active and sterile neutrinos. At the same time, a residual $Z_2$ symmetry of the U(1) gauge symmetry remains exact, allowing for the existence of dark matter.
13 pages, 7 figures, accepted for publication in Phys. Lett. B