A Supersymmetric Model with Dirac Neutrino Masses

Abstract

New models have recently been proposed in which a second Higgs doublet couples only to the lepton doublets and right-handed neutrinos, yielding Dirac neutrino masses. The vacuum value of this second "nu-Higgs" doublet is made very small by means of a very softly-broken $Z_2$ or U(1) symmetry. The latter is technically natural and avoids fine-tuning and very light scalars. We consider a supersymmetric version of this model, in which two additional doublets are added to the MSSM. If kinematically allowed, the decay of the heavy MSSM scalar into charged nu-Higgs scalars will yield dilepton events which can be separated from the W-pair background. In addition, the nu-Higgsinos can lead to very dramatic tetralepton, pentalepton and hexalepton events which have negligible background and can be detected at the LHC and the Tevatron.

18 pages, 3 figures, 6 tables; PRD version

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• MadGraph/MadEvent v4: The New Web Generation
• Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics
• Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
• Dirac neutrinos from a second Higgs doublet
• A New Two Higgs Doublet Model
• The LHC Discovery Potential of a Leptophilic Higgs
• Slepton Production at e+e- and e-e- Linear Colliders
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Cited by in corpus (13)

• LHC phenomenology of a two-Higgs-doublet neutrino mass model
• Yukawa alignment from natural flavor conservation
• Composite Dirac Neutrinos
• Hunting for Heavy Majorana Neutrinos with Lepton Number Violating Signatures at LHC
• Small neutrino masses due to R-symmetry breaking for a small cosmological constant
• The Supersymmetric Leptophilic Higgs Model
• Quasi-Dirac neutrinos in a model with local $B-L$ symmetry
• Constraints on composite Dirac neutrinos from observations of galaxy clusters
• Bulk Majorana mass terms and Dirac neutrinos in Randall Sundrum Model
• Phenomenology of SUSY SU(5) GUT with neutrinophilic Higgs
• Resonant leptogenesis with mild degeneracy
• Right-handed sneutrinos as asymmetric DM and neutrino masses from neutrinophilic Higgs bosons
• Why is TeV-scale a geometric mean of neutrino mass and GUT-scale?