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

Abstract

We propose Dirac type active neutrino with rank two mass matrix and a Majorana fermion dark matter candidate with an alternative local $U(1{)}_{B-L}$ 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 $Z_2$ symmetry and the relic density is obtained from $Z^{\prime }$ boson exchanging process. Taking into account collider constraints on $Z^{\prime }$ boson mass and coupling, we estimate the relic density.

Comments: 14 pages, 3 figures, 1 table; accepted version for publication in European Physical Journal C