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

Abstract

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 l nu 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 l l' pTmiss, where l l' = e+ e-, mu+ mu-, and e+- mu-+. We find that a cut on the kinematic variable M_{T2} eliminates most of the t t 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.

24 pages, 4 figures. V2: reference added, submitted to PRD. V3: minor improvements to text; version to appear in PRD

References in corpus (6)

• PYTHIA 6.4 Physics and Manual
• Neutrino Masses and the LHC: Testing Type II Seesaw
• A New Two Higgs Doublet Model
• Leptonic signatures of doubly charged Higgs boson production at the LHC
• Testing a Neutrino Mass Generation Mechanism at the Large Hadron Collider
• Inverted neutrino mass hierarchy and new signals of a chromophobic charged Higgs at the Large Hadron Collider

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