Updated Limits on Leptophilic Effective WIMPS

We analyze the limits from the ATLAS 139 fb^-1 search for charginos and sleptons with two leptons and missing energy in the context of minimal extensions to the standard model with thermal relic dark matter called Leptophilic Effective WIMPs.  These models contain a singlet dark matter particle and a lepton “partners” with renormalizable cubic couplings between dark matter, the lepton partners, and leptons. Within this framework, we consider four models where the dark matter is a real scalar boson, complex scalar boson, Majorana fermion, or Dirac fermion.