High energy particle colliders, like the LHC, are one of three ways proposed to detect dark matter. Dark matter is theorized to be a natural candidate for the lightest supersymmetric particle and is proposed to be a decay product in an event where SUSY sparticles are pair produced and decay into standard model quarks, which are detected in the collider and a neutralino that escapes detection (proposed DM). The other two methods are direct detection, in which we expect dark matter scattering off a nuclei, and indirect detection, in which dark matter annihilates and remnants of this annihilation are studied. Previous collider searches have been done for dark matter produced in association with a single photon or jet. My work looks specifically for events where dark matter particles are produced in association with at least two jets and leave behind a signature of large missing transverse energy (E_T) in the detector. Because of the large amount of missing E_T, we can utilize the razor variables M_R and R², developed initially for SuperSymmetry searches . My aim is to improve upper limits on the DM production cross section and translate these into the cross section of DM-nucleon interaction to compare with results from direct detection experiments. I also hope to analyze the results for various different theoretical models.