  Collider searches for energetic particles recoiling against missing
transverse energy allow to place strong bounds on the interactions between dark
matter (DM) and standard model particles. In this article we update and extend
LHC constraints on effective dimension-7 operators involving DM and electroweak
gauge bosons. A concise comparison of the sensitivity of the mono-photon,
mono-W, mono-Z, mono-W/Z, invisible Higgs-boson decays in the vector boson
fusion mode and the mono-jet channel is presented. Depending on the parameter
choices, either the mono-photon or the mono-jet data provide the most stringent
bounds at the moment. We furthermore explore the potential of improving the
current 8 TeV limits at 14 TeV. Future strategies capable of disentangling the
effects of the different effective operators involving electroweak gauge bosons
are discussed as well.
