Searching for dark matter at LHC with Mono-Higgs production

Understand

We consider LHC searches for dark matter in the mono-Higgs channel using the tools of effective field theory.

• This channel takes unique advantage of the presence of $SU(2)_L$ breaking in those operators to avoid the need for any initial-state radiation, usually necessary to tag the production of invisible particles.
• We find that sensitivities to parameters describing dark matter interactions with standard model particles are comparable to those from monojet searches for a subset of the usually-considered operators, and we present for the first time bounds from collider searches on operators which couple DM to only the Higgs field or its covariant derivatives.