A search for B-L R-parity-violating scalar top decays in squareroot s = 8 TeV pp collisions with the ATLAS experiment

Brett Jackson, University of Pennsylvania

Abstract

This 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 [special characters omitted] = 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.

Subject Area

Particle physics

Recommended Citation

Jackson, Brett, "A search for B-L R-parity-violating scalar top decays in squareroot s = 8 TeV pp collisions with the ATLAS experiment" (2015). Dissertations available from ProQuest. AAI3722828.
https://repository.upenn.edu/dissertations/AAI3722828

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