Loop suppression of Dirac neutrino mass in the neutrinophilic two-Higgs-doublet model

• DOI: 10.1016/j.physletb.2013.09.061
• Publication Date: 2013-10-03T17:21:04Z
• Authors: Shinya Kanemura; Toshinori Matsui; Hiroaki Sugiyama
• Keywords: Yukawa potential; Two-Higgs-doublet model; Vacuum expectation value; Higgs sector

We extend the scalar sector of neutrinophilic two-Higgs-doublet model, where small masses Dirac neutrinos are obtained via a vacuum expectation value vν SU(2)L-doublet field which has Yukawa interaction with only right-handed neutrinos. A global U(1)X symmetry is used for nature second and also eliminating Majorana mass terms By virtue an appropriate assignment U(1)X-charges to new particles, our model unbroken Z2 symmetry, under lightest Z2-odd boson can be dark matter candidate. In generated by one-loop diagram particles contribute. briefly discuss possible signature at LHC.