Precise probing of the inert Higgs-doublet model at the LHC

Abstract

The inert Higgs-doublet model provides a simple framework to accommodate a viable Higgs portal scalar dark matter candidate, together with other heavier scalars of mass 100 GeV or more. We study the effect of next-to-leading order (NLO) QCD corrections in this scenario in the context of the Large Hadron Collider. $\mathcal{O}({\alpha }_s)$ corrections to the gluon-gluon-Higgs effective coupling have been taken into account in this study wherever appropriate. We find such corrections have a significant impact on various kinematic distributions and reduce scale uncertainties substantially. Fixed order NLO results are matched to the {\sc Pythia8} parton shower (PS) and the di-fatjet signal associated with the missing transverse momentum is analyzed, as this channel has the ability to explore its entire parameter space during the next phase of the LHC run. A closer look at the NLO+PS computation indicates a sizable NLO effect together with a subdued contribution from associated production of the heavy scalar compared to the pair production, thereby leading to a refined analysis strategy during the multivariate analysis of this signal.

22 pages, 11 figures, and 6 tables. This version matches the published version

References in corpus (22)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Results from a search for dark matter in the complete LUX exposure
• Dark Matter Results from 225 Live Days of XENON100 Data
• Jet substructure as a new Higgs search channel at the LHC
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• Reducing full one-loop amplitudes to scalar integrals at the integrand level
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• Jet substructure as a new Higgs search channel at the LHC
• Techniques for improved heavy particle searches with jet substructure
• Inert Doublet Model and LEP II Limits
• Natural Dark Matter from an Unnatural Higgs Boson and New Colored Particles at the TeV Scale
• Status of the Inert Doublet Model and the Role of multileptons at the LHC
• Evolution of Universe to the present inert phase
• Dilepton constraints in the Inert Doublet Model from Run 1 of the LHC
• Search for disappearing tracks in proton-proton collisions at sqrt(s) = 8 TeV
• Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Exploring collider signatures of the inert Higgs doublet model
• \sqrt{s}_min: a global inclusive variable for determining the mass scale of new physics in events with missing energy at hadron colliders
• RECO level \sqrt{s}_{min} and subsystem \sqrt{s}_{min}: improved global inclusive variables for measuring the new physics mass scale in missing energy events at hadron colliders

Cited by in corpus (13)

• Top-philic Dark Matter in a Hybrid KSVZ axion framework
• Precision prediction of a democratic up-family philic KSVZ axion model at the LHC
• Unveiling desert region in inert doublet model assisted by Peccei-Quinn symmetry
• Precise probing and discrimination of third-generation scalar leptoquarks
• Probing the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider
• Collider fingerprints of freeze-in dark matter produced during the fast expansion phase of Universe
• Electroweak Phase Transition, Gravitational Waves and Collider Probes in Multi-Scalar Dark Matter Scenarios
• Full one-loop radiative corrections to $e^{+}{e}^{-}\to H^{+}{H}^{-}$ in the inert doublet model
• Two-component Dark Matter and low scale Thermal Leptogenesis
• A Scotogenic Model as a Prototype for Leptogenesis with One Single Gauge Singlet
• Indian Contributions to LHC Theory
• Constraints on the Inert Doublet Model of dark matter with very high-energy gamma-ray observatories
• Non-thermal Dark Matter in $U(1{)}_{B-L}$ Extension of Inert Doublet Model