LHC phenomenology of a two-Higgs-doublet neutrino mass model

We study the LHC search prospects for a model in which the neutrinos obtain Dirac masses from couplings to a second Higgs doublet with tiny vacuum expectation value. The model contains a charged Higgs boson that decays to lv with branching fractions controlled by the neutrino masses and mixing angles as measured in neutrino oscillation experiments. The most promising signal is electroweak production of H+H- pairs with decays to ll' p(T)(miss), where ll' = e(+)e(-), mu(+)mu(-), and e(+/-)mu(-/+). We find that a cut on the kinematic variable M-T2 eliminates most of the t (t) over bar and W-pair background. Depending on the neutrino mass spectrum and mixing angles, a 100 (300) GeV charged Higgs could be discovered at the LHC with as little as 8(24) fb(-1) of integrated luminosity at 14 TeV pp center-of-mass energy.