Reinterpretation of ATLAS Searches for Supersymmetry in the Context of R-Parity Violating Models

Most searches for supersymmetry at the Large Hadron Collider are interpreted in the context of models in which R-parity is conserved. R-parity conservation (RPC) is introduced to prevent proton decay, but the stability of the proton can also be ensured by other mechanisms than RPC. Therefore investigation of R-parity violating (RPV) models is important to cover the full parameter space of supersymmetric extensions of the Standard Model. These models have experimental signatures that are distinctly different from those of RPC models. In particular, the lightest supersymmetric particle (LSP) can decay, which leads to final states with a large number of leptons and/or jets and a lower missing transverse energy compared to the case of RPC where the LSP is stable. It is interesting to examine to which degree existing ATLAS searches are already sensitive also to RPV models. In this thesis, ATLAS searches for supersymmetry with $\sqrt{s} = 8~\text{TeV}$ proton-proton collisions are used to constrain gluino and squark production cross-sections followed by prompt RPV decays of the LSP to leptons and jets.