Princeton University Dark Cosmos Seminar

The CMS and ATLAS experiments at the CERN LHC have the unique potential to (possibly) directly produce dark matter in proton-proton collisions and study its properties. Many searches for dark matter have been carried out, mostly focused on Mono-X signatures with "missing" transverse momentum. These searches, however, have so far not observed any evidence for dark matter and are setting increasingly stringent limits on the allowed dark matter mass and cross section. In this talk, I will describe the current CMS dark matter search program, including searches for long-lived dark matter particles that travel some macroscopic distance before decaying within the CMS detector. In particular, I will present a recent CMS search for an inelastic dark matter model in a final state with a pair of collinear, displaced muons and missing transverse momentum.