Double type-II Dirac seesaw accompanied by Dirac fermionic dark matter

A TeV-scale Higgs doublet with a small mixing to the standard model can have sizable Yukawa couplings several right-handed neutrinos and lepton doublets. This provides testable Dirac neutrino mass generation. We further consider seesaw mechanism involving $U(1)_{B-L}^{}$ gauge symmetry, which predicts existence of two stable fermionic dark matter, simultaneously explain between doublets generation cosmic baryon asymmetry.