Search for Supersymmetry in the 4-Lepton Final State with the ATLAS Detector

The four-lepton final state, rare in standard model processes, is an attractive channel for new physics searches at the LHC. In supersymmetry (SUSY), charged leptons may arise from cascade decays of SUSY particles to the lightest supersymmetric particle, or from R-Parity violating decays to standard model particles. This poster presents a search for supersymmetry in events with at least four charged leptons carried out using $20.3 \textrm{ fb$^{-1}$}$ of proton-proton collision data taken with the ATLAS detector at $\sqrt{s} = 8 \textrm{ TeV}$ during the 2012 LHC run. Up to two of the leptons may be hadronically decaying tau leptons, enhancing the sensitivity to tau-enriched scenarios. A high sensitivity to a wide range of R-Parity conserving and violating supersymmetric models is achieved.