Exploring the Inert Doublet Model through the dijet plus missing transverse energy channel at the LHC

Abstract

In this study of the Inert Doublet Model (IDM), we propose that the dijet + missing transverse energy channel at the Large Hadron Collider (LHC) will be an effective way of searching for the scalar particles of the IDM. This channel receives contributions from gauge boson fusion, and t−channel production, along with contributions from H + associated production. We perform the analysis including study of the Standard Model (SM) background with assumed systematic uncertainty, and optimise the selection criteria employing suitable cuts on the kinematic variables to maximise the signal significance. We find that with high luminosity option of the LHC, this channel has the potential to probe the IDM in the mass range of up to about 400 GeV, which is not accessible through other leptonic channels. In a scenario with light dark matter of mass about 65 GeV, charged Higgs in the mass range of around 200 GeV provides the best possibility with a signal significance of about 2σ at an integrated luminosity of about 3000 fb −1 . 1 poulose@iitg.ernet.in 2 shibananda@iitg.ernet.in 3 sridhar@theory.tifr.res.in 1 arXiv:1604.03045v3 [hep-ph]

Investigating extended scalar sectors at current and future colliders

“…The model has been vastly explored in the literature (see e.g. [20,[31][32][33][34] and references therein, as well as [20,31,[34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] for studies of LHC phenomenology). Signatures at colliders always render electroweak gauge bosons and missing transverse energy.…”

Prospects for charged Higgs searches at the LHC

“…Another recent study of the S + S and S + A channels [291] concludes that the di-jet channel may offer the best prospects for discovery, but that a luminosity of 500 fb −1 would be needed for an S + mass up to 150 GeV, whereas 1 and 2 ab −1 for masses of 200 and 300 GeV. In the above SO(10) scenario the mass difference M S ± − M S turns out to be less than m W and at the leading order the allowed decays are only those given by Eq.…”

Observability of inert scalars at the LHC

“…The observation of inert scalars at the LHC has also attracted attention. For a list of recent work one may refer to [10][11][12][13][14][15]. These studies have been done mostly based on the proa e-mail: majid.hashemi@cern.ch b e-mail: saereh.najjari@fuw.edu.pl duction of H + H − , H A, H H + and AH + followed by the H + → W + H and A → Z H assuming H as the dark matter candidate.…”

“…These studies have been done mostly based on the proa e-mail: majid.hashemi@cern.ch b e-mail: saereh.najjari@fuw.edu.pl duction of H + H − , H A, H H + and AH + followed by the H + → W + H and A → Z H assuming H as the dark matter candidate. In one of the most recent works in the list [14] a dijet plus missing transverse energy signature of the inert doublet model events has been studied. The studied benchmark points (which are different from ours) are shown to be observable at a minimum integrated luminosity of 3000 fb −1 .…”