Phenomenology of charged scalars in the CP-Violating Inert-Doublet Model

Abstract

We study the production and decay of charged scalars, eta^\pm, in the context of a CP-Violating Inert-Doublet Model. The model is an extended version of the Inert Doublet Model with an extra Higgs doublet and provides new sources of CP violation and a dark matter candidate. As compared with the 2HDM, the particle spectrum contains two additional neutral scalars and a charged pair. These particles are subject to a Z_2 symmetry, but can be pair-produced in hadronic collisions. If a charged scalar is included in the pair, it decays to the stable dark-matter candidate (i.e., the lightest neutral inert scalar) plus Standard Model matter that consists of either two jets or a single lepton (from a virtual or real W or Z) plus missing transverse energy. Since the single production channel is available only at hadronic colliders, we consider the Large Hadron Collider environment, hence we discuss experimental perspectives and possible hallmarks of the model, such as events with a displaced vertex.

23 pages

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• Relic density of Dark Matter in the Inert Doublet Model beyond Leading Order. I) The Heavy Mass Case
• Lepton collider signatures of dark CP violation
• Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 1. Renormalisation and constraints
• Constraints on the Parameter Space in an Inert Doublet Model with two Active Doublets
• BFB conditions on a class of symmetry constrained 3HDM
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• Probing Radiative Neutrino Mass Models with Dilepton Events at the LHC
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• A revisit to scalar dark matter with radiative corrections
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