A new viable region of the inert doublet model

Abstract

The inert doublet model, a minimal extension of the Standard Model by a second Higgs doublet, is one of the simplest and most attractive scenarios that can explain the dark matter. In this paper, we demonstrate the existence of a new viable region of the inert doublet model featuring dark matter masses between Mw and about 160 GeV. Along this previously overlooked region of the parameter space, the correct relic density is obtained thanks to cancellations between different diagrams contributing to dark matter annihilation into gauge bosons (W+W- and ZZ). First, we explain how these cancellations come about and show several examples illustrating the effect of the parameters of the model on the cancellations themselves and on the predicted relic density. Then, we perform a full scan of the new viable region and analyze it in detail by projecting it onto several two-dimensional planes. Finally, the prospects for the direct and the indirect detection of inert Higgs dark matter within this new viable region are studied. We find that present direct detection bounds already rule out a fraction of the new parameter space and that future direct detection experiments, such as Xenon100, will easily probe the remaining part in its entirety.

27 pages, 16 figures

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Cited by in corpus (21)

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• Exploring collider signatures of the inert Higgs doublet model
• Dark Matter in Inert Triplet Models
• Common Origin of Neutrino Mass, Dark Matter and Dirac Leptogenesis
• Common Origin of Neutrino Mass and Dark Matter from Anomaly Cancellation Requirements of a $U(1{)}_{B-L}$ Model
• Dark matter, neutrino masses and high scale validity of an inert Higgs doublet model
• Collider and Dark Matter Searches in the Inert Doublet Model from Peccei-Quinn Symmetry
• Observable Lepton Number Violation with Predominantly Dirac Nature of Active Neutrinos
• Constraints on light dark matter particles using white dwarf stars
• Inert Doublet Dark Matter with an additional scalar singlet and 125 GeV Higgs Boson
• Low-mass fermiophobic charged Higgs phenomenology in two-Higgs-doublet models
• Simple theory for scotogenic dark matter with residual matter-parity
• Neutrino mass and asymmetric dark matter: study with inert Higgs doublet and high scale validity
• The Inert Doublet Model and its Phenomenology
• Temperature evolution of physical parameters in the Inert Doublet Model
• Scalar Dark Matter Candidates in Two Inert Higgs Doublet Model
• Prospects of Indirect Detection for the Heavy S3 Dark Doublet
• Dark Matter Constraints on Composite Higgs Models
• Constraining the scalar singlet and inert dark matter models using neutron stars
• Theoretical and phenomenological consequences of active and sterile neutrino within Beyond Standard Model framework