Search for top squarks in R-parity violating supersymmetry with dileptons and jets

The results of a search for top squark pair production in proton-proton collisions at $\sqrt{s}$ = 8 TeV are presented. The search focuses on R-parity violating chargino-mediated decays of the top squark in final states with low missing transverse momentum, two opposite charge electrons or muons, and at least five jets. The analysis is based on a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$ collected with the CMS detector at the LHC in 2012. The data are found to be in agreement with the standard model expectation, and upper limits are placed on the top squark pair production cross section at the 95\% confidence level. Top squark masses less than 1000 (890) GeV for the muon (electron) channel are excluded in models with a single non-zero coupling $\lambda^{\prime}_{ijk}$ ($i,j,k\leq$ 2).