Analysis of the Bounds on Dark Matter Models from Monojet Searches at the LHC

Understand

We analyse the constraints on models of WIMP Dark Matter that can be derived from upper bounds on the "monojet" cross section at the LHC.

• These constraints were originally interpreted in the context of an effective field theory (EFT) where the Standard Model is extended by a dimension--6 operator whose coefficient is $1/\Lambda^2$.
• We show that combining the 8 TeV data of the ATLAS and CMS collaborations improves the bounds only slightly.
• We then analyze this final state in the context of simplified models with $s-$channel mediator.