Search for supersymmetry in pp 1 collisions at √s = 7 TeV in final states with missing transverse momentum, b-jets and one lepton with the ATLAS detector

A search for supersymmetric particles in events with large missing transverse momentum, heavy flavour jet candidates and one leptons (e,m) in √s=7 TeV proton proton collisions is presented. In a data sample corresponding to an integrated luminosity of 1 fb−1 recorded by the ATLAS experiment at the LargeHadron Collider, no significant excess is observed with respect to the prediction for Standard Model processes. For R-parity conserving models in which stops are the only squarks to appear in the gluino decay cascade, gluino masses below X(X) GeV are excluded at the 95% C.L. in case of on-shell(off-shell) g˜→t˜1t decays (BR=1).