Abstract

Supersymmetry (SUSY) is a beyond the Standard Model theory that answers many of the unsolved questions of the Standard Model. Most of the LHC searches for SUSY have focussed on looking for “R-parity conserving” models, in which the lightest SUSY particle is stable and neutral and so will escape the detector undetected and without decaying. The conclusions of these searches don’t apply to “R-parity violating” models, which are hence currently less constrained. I will start by giving an introduction to SUSY and physics at the LHC , and then go on to talk about some work I have recently done with my supervisor Ben Allanach on a model of R-parity violating SUSY with the right-handed sbottom as the lightest SUSY particle. Ben and his collaborator K. Sridhar had previously found that this model could explain an anomalous effect (the ttbar asymmetry) seen at the Tevatron collider, if this sbottom has a large coupling to top and down quarks. I will show that large regions in the mass-coupling parameter space of the sbottom are ruled out using recent LHC measurements.