DM exclusion limit in the two-dimensional phase space of mχ vs mmed set using the combined ee+μμ channel. The DM model assumes a vector mediator, a fermionic WIMP, and the coupling parameters gq = 0.25 and gχ = 1. Both the observed and expected limits are presented, and the 1σ uncertainty band for the expected limits is also provided. Regions bounded by the limit curves are excluded at the 95% CL. The grey line labelled with "mmed = 2mχ'' indicates the kinematic threshold where the mediator can decay on-shell into WIMPs. The relic density line [arXiv 1603.04156] illustrates the combination of mχ and mmed that would explain the observed DM relic density.
|Date made available||2017|