Simplified dark matter top-quark interactions at the LHC

Abstract

Stringent limits on the interactions between dark matter (DM) and the standard model can be set by studying how initial-state or final-state particles recoil against missing transverse energy (MET). In this work, we improve, extend and correct LHC constraints on the interactions between DM and top quarks that are mediated by the exchange of spin-0 s-channel resonances. A comparison of the LHC run-1 sensitivity of the two main search channels is presented, which shows that mono-jet searches are typically more restrictive than the MET + tbar t searches. We furthermore explore the reach of the 14 TeV LHC. The collider constraints are compared to the restrictions arising from direct and indirect detection as well as the DM relic abundance, and we also reflect on effective field theory interpretations of the LHC exclusions.

29 pages, 11 figures; v4: conflict with CERN-PH-TH number fixed

References in corpus (8)

• Constraints on Dark Matter from Colliders
• The Tevatron at the Frontier of Dark Matter Direct Detection
• A taste of dark matter: Flavour constraints on pseudoscalar mediators
• Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in $\sqrt{s}=$ 8 TeV pp collisions with the ATLAS detector
• Scalar and pseudoscalar Higgs production in association with a top-antitop pair
• Constraining Dark Sectors at Colliders: Beyond the Effective Theory Approach
• Next-to-Leading Order Predictions for Dark Matter Production at Hadron Colliders
• LHC constraints on gauge boson couplings to dark matter

Cited by in corpus (18)

• Review of LHC Dark Matter Searches
• Dark Matter Searches at Colliders
• Simplified dark matter models with two Higgs doublets: I. Pseudoscalar mediators
• Neutron stars at the dark matter direct detection frontier
• A Global View of the Off-Shell Higgs Portal
• Unveiling Hidden Physics at the LHC
• LHC constraints on gauge boson couplings to dark matter
• Beyond the Dark matter effective field theory and a simplified model approach at colliders
• Forbidden Dark Matter at the Weak Scale via the Top Portal
• Characterizing Higgs portal dark matter models at the ILC
• Closing up on Dark Sectors at Colliders: from 14 to 100 TeV
• Lepton-Flavor Violating Mediators
• LHC Dark Matter Working Group: Next-generation spin-0 dark matter models
• Partially Natural Two Higgs Doublet Models
• Signatures of top flavour-changing dark matter
• The Hunt for the Rest of the Higgs Bosons
• Dark matter at the LHC
• Chromo-Rayleigh Interactions of Dark Matter