  Displaced vertices are relatively unusual signatures for dark matter searches
at the LHC. We revisit the model of pseudo-Dirac dark matter (pDDM), which can
accommodate the correct relic density, evade direct detection constraints, and
generically provide observable collider signatures in the form of displaced
vertices. We use this model as a benchmark to illustrate the general techniques
involved in the analysis, the complementarity between monojet and displaced
vertex searches, and provide a comprehensive study of the current bounds and
prospective reach.
