Search for supersymmetry with jets, missing transverse momentum, tau leptons and one light lepton at the ATLAS detector

The search for supersymmetric extensions of the Standard Model of particle physics (SUSY) is one of the main objectives in the physics program of the ATLAS experiment at the Large Hadron Collider (LHC). However, there has been no evidence for Supersymmetry during the first data taking period in 2010 and 2012 and stringent exclusion limits could be set in various signal models. For the second run of the LHC improved analysis methods will be important. One possibility to reach better exclusion power is using a multi-bin shape fit approach rather than a simple one-bin exclusion fit. The gain from such binned signal regions has been studied for an analysis using final states with tau leptons and one lighter lepton (electron or muon). The analysis was performed on the full 2012 LHC dataset with an integrated luminosity of 21 fb^-1 and the results were interpreted in four different SUSY scenarios: Gauge-Mediated Supersymmetry Breaking (GMSB), Natural Gauge Mediation (NGM), Gravity Mediated Symmetry Breaking (MSUGRA) and Bilinear R-Parity Violation (BRPV).