Neutrinophilic two Higgs doublet model with dark matter under an alternative $$U(1)_{B-L}$$ U(1)B-L gauge symmetry

Abstract

Abstract We propose a Dirac type active neutrino with rank two mass matrix and a Majorana fermion dark matter candidate with an alternative local $$U(1)_{B-L}$$ U(1)B-L extension of neutrinophilic two Higgs doublet model. Our dark matter candidate can be stabilized due to charge assignment under the gauge symmetry without imposing extra discrete $$Z_2$$ Z2 symmetry and the relic density is obtained from an $$Z'$$ Z′ boson exchanging process. Taking into account collider constraints on the $$Z'$$ Z′ boson mass and coupling, we estimate the relic density.