SUSY search with two same-sign leptons and jets with the ATLAS detector using 21 fb-1 of pp collisions at 8TeV

A search for the production of supersymmetric particles decaying into final states with jets, b-jets, missing transverse momentum and two isolated leptons, e or μ, with the same electric charge (same-sign leptons) is presented. The analysis uses a data sample collected during 2012, which corresponds to a total integrated luminosity of 20.7 fb-1 of √s = 8 TeV proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider. No deviation from the Standard Model expectation is observed. Exclusion limits are derived for a mSUGRA/CMSSM model, for which the parameters are chosen in such a way that the Higgs mass is compatible with the recent discovery of a Higgs-like particle at the LHC, and for a wide variety of simplified models of supersymmetry. The result significantly extends previous exclusion limits from several searches for Supersymmetry.