Higgs -> $\gamma \gamma$, $Z\gamma$ in the Inert Doublet Model

Abstract

An analysis of the Higgs boson decay rates to $\gamma \gamma$ and $Z\gamma$ in the Inert Doublet Model is presented. We study the correlation between the two rates and perform extended analysis of the two-photon rate ($R_{\gamma \gamma }$). We study both the possibility of enhancing and suppressing $R_{\gamma \gamma }$ and find constraints for masses of the scalar particles (in particular the dark matter (DM) candidate and the charged scalar) and their couplings to the Higgs boson. We also combine the resulting constraints with those following from the WMAP measurements of the DM relic density, obtaining stringent constraints on different dark matter scenarios.

5 pages, 5 figures, contribution to the proceedings of the conference "Matter To The Deepest, Recent Developments In Physics Of Fundamental Interactions, XXXVII International Conference of Theoretical Physics" (1-6 September, Ustron, Poland), v2: minor changes, matches published version

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• Dark Matter data and constraints on quartic couplings in IDM
• Dark Matter and 125 GeV Higgs for IDM

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• Advancing LHC Probes of Dark Matter from the Inert 2-Higgs Doublet Model with the Mono-jet Signal
• Dark matter, neutrino masses and high scale validity of an inert Higgs doublet model
• Inert scalars and vacuum metastability around the electroweak scale
• Probing Dark Matter with Disappearing Tracks at the LHC
• Low-mass fermiophobic charged Higgs phenomenology in two-Higgs-doublet models
• One-loop radiative corrections to $e^{+}{e}^{-}\to Z{h}^0/H^0{A}^0$ in the Inert Higgs Doublet Model
• Complex Scalar Dark Matter in G2HDM
• Revisiting one-loop corrections to the trilinear Higgs boson self-coupling in the Inert Doublet Model
• Complementary Probes of Two-component Dark Matter
• Prediction of $h\to \gamma Z$ from $h\to \gamma \gamma$ at LHC for the IMDS${}_3$ Model
• Complementary collider and astrophysical probes of multi-component Dark Matter
• Electroweak baryogenesis between broken phases in multi-step phase transition
• Revisiting Inert Doublet Model Parameters
• Lepton number violating operators with standard model gauge fields: A survey of neutrino masses from 3-loops and their link to dark matter
• Decoding Dark Matter at future $e^{+}{e}^{-}$ colliders
• Full one-loop radiative corrections to $e^{+}{e}^{-}\to H^{+}{H}^{-}$ in the inert doublet model