Dirac Neutrinos and Dark Matter Stability from Lepton Quarticity
arXiv:1606.04543 · doi:10.1016/j.physletb.2017.01.070
Abstract
We propose to relate dark matter stability to the possible Dirac nature of neutrinos. The idea is illustrated in a simple scheme where small Dirac neutrino masses arise from a type--I seesaw mechanism as a result of a $Z_4$ discrete lepton number symmetry. The latter implies the existence of a viable WIMP dark matter candidate, whose stability arises from the same symmetry which ensures the Diracness of neutrinos.
12 pages, 6 figures, Report N IFIC/16-40