Jackson, Brett
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Publication A Search for B-L R-Parity-Violating Scalar Top Decays in √s = 8 Tev Pp Collisions With the Atlas Experiment(2015-01-01) Jackson, BrettThis thesis presents a search for direct scalar top pair production where the scalar tops decay via an R-parity-violating coupling to a final state with two leptons and two identified b-jets. The analysis uses 20.3 fb−1 of √s = 8 TeV proton-proton collision data collected with the ATLAS detector at the LHC. No significant excess is observed over the Standard Model background. Assuming a supersymmetric minimal B − L extension to the Standard Model, limits on the scalar top mass are placed between 500 GeV and 1 TeV with a branching fraction above 20% for the scalar top to decay to an electron or a muon and a b-quark.