Search for Resonant Slepton Production in a DiMuon + Jets Final State with CMS Data

Presented is a search for the resonant production of a slepton. The production mechanism is based on an R-parity violating, supersymmetric scenario, called baryon-triality, making use of the CMSSM theory. The search is restricted to the Yukawa coupling λ′211 that generates a slepton of the second generation, a single smuon or a muon sneutrino. As final state, the decay into two muons and jets is chosen, a final state that allows to completely reconstruct the slepton mass as well as masses of gauginos that are produced in the slepton decay, as it does not provide a source for missing transverse energy. Several cuts are performed to select the event topology of the signal and reduce background contributions. Thereby is taken advantage of the possible lepton number violation by applying a same charge cut to the muons, that allows to strongly reduce the Standard Model backgrounds. As no significant deviation from the expectation can be observed, limits are set in the plane of the SUSY-parameters m0 and m1/2, exceeding the limits of a direct search from D0, Tevatron significantly. The search is performed on pp-data, that were recorded in 2011 by the CMS experiment at the LHC, CERN, at a center of mass energy of √s = 7 TeV. The amount of data analysed corresponds to an intgrated luminosity of 4.98 /fb.