Lepton Portal Limit of Inert Higgs Doublet Dark Matter with Radiative Neutrino Mass

Abstract

We study an extension of the Inert Higgs Doublet Model (IHDM) by three copies of right handed neutrinos and heavy charged leptons such that both the inert Higgs doublet and the heavy fermions are odd under the $Z_2$ symmetry of the model. The neutrino masses are generated at one loop in the scotogenic fashion. Assuming the neutral scalar of the inert Higgs to be the dark matter candidate, we particularly look into the region of parameter space where dark matter relic abundance is primarily governed by the inert Higgs coupling with the leptons. This corresponds to tiny Higgs portal coupling of dark matter as well as large mass splitting within different components of the inert Higgs doublet suppressing the coannihilations. Such lepton portal couplings can still produce the correct relic abundance even if the Higgs portal couplings are arbitrarily small. Such tiny Higgs portal couplings may be responsible for suppressed dark matter nucleon cross section as well as tiny invisible branching ratio of the standard model Higgs, to be probed at ongoing and future experiments. We also briefly discuss the collider implications of such a scenario.

10 pages, 7 figures

References in corpus (10)

• Dark Matter Results from 225 Live Days of XENON100 Data
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• Dark Matter Results from First 98.7-day Data of PandaX-II Experiment
• Inert Doublet Model and LEP II Limits
• Status of the Inert Doublet Model and the Role of multileptons at the LHC
• Dilepton constraints in the Inert Doublet Model from Run 1 of the LHC
• Exploring collider signatures of the inert Higgs doublet model
• Dark Matter candidate in a Heavy Higgs Model - Direct Detection Rates
• Dark matter, neutrino masses and high scale validity of an inert Higgs doublet model
• Scalar Dark Matter with Type II Seesaw

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