Search for supersymmetry in pp collisions at

events with a single lepton, large jet multiplicity, and multiple b jets The CMS Collaboration∗ Results are reported from a search for supersymmetry in pp collisions at a center-of-mass energy of 8 TeV, based on events with a single isolated lepton (electron or muon) and multiple jets, at least two of which are identified as b jets. The data sample cor-responds to an integrated luminosity of 19.3 fb−1 recorded by the CMS experiment at the LHC in 2012. The search is motivated by supersymmetric models that involve strong-production processes and cascade decays of new particles. The resulting final states contain multiple jets as well as missing transverse momentum from weakly in-teracting particles. The event yields, observed across several kinematic regions, are consistent with the expectations from standard model processes. The results are in-terpreted in the context of simplified supersymmetric scenarios with pair production of gluinos, where each gluino decays to a top quark-antiquark pair and the lightest neutralino. For the case of decays via virtual top squarks, gluinos with a mass smaller than 1.26 TeV are excluded for low neutralino masses. Published in Physics Letters B as doi:10.1016/j.physletb.2014.04.023. c © 2014 CERN for the benefit of the CMS Collaboration. CC-BY-3.0 license ∗See Appendix A for the list of collaboration members a