Double type-II Dirac seesaw accompanied by Dirac fermionic dark matter
arXiv:1907.11557 · doi:10.1016/j.physletb.2021.136605
Abstract
A TeV-scale Higgs doublet with a small mixing to the standard model Higgs doublet can have the sizable Yukawa couplings to several right-handed neutrinos and the standard model lepton doublets. This provides a testable Dirac neutrino mass generation. We further consider a seesaw mechanism involving a gauge symmetry, which predicts the existence of two right-handed neutrinos and a stable Dirac fermionic dark matter, to simultaneously explain the small mixing between the two Higgs doublets and the generation of the cosmic baryon asymmetry.
8 pages, 2 figures. arXiv admin note: text overlap with arXiv:1907.10018, arXiv:1907.09443, arXiv:1907.10019