Exploring Inert Scalars at CLIC

Abstract

We investigate the prospect of discovering the Inert Doublet Model scalars at CLIC. As signal processes, we consider the pair-production of inert scalars, namely e+e- -> H+H- and e+e- -> AH, followed by decays of charged scalars H+ and neutral scalars A into leptonic final states and missing transverse energy. We focus on signal signatures with two muons or an electron and a muon pair in the final state. A number of selected benchmark scenarios that cover the range of possible collider signatures of the IDM are considered. For the suppression of SM background with the same visible signature, multivariate analysis methods are employed. For several benchmark points discovery is already possible at low-energy stage of CLIC. Prospects of investigating scenarios that are only accessible at higher collider energies are also discussed.

latex, 22 pages, 12 figures, v2: comments on indirect DM searches and LHC prospects added, matches published version

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• Phenomenology of the Inert Doublet Model with a global U(1) symmetry
• Optimal determination of New Physics couplings: A comparative study
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• Low mass scalars at $e^{+}{e}^{-}$ colliders
• Dark matter in three-Higgs-doublet models with $S_3$ symmetry
• Search for additional scalar bosons within the Inert Doublet Model in a final state with two leptons at the FCC-ee
• Two dark matter candidates in a doublet-triplet Higgs model
• Shifts in BCFW method for QED
• Higgs Production in Association with a Dark-Z at Future Electron Positron Colliders