Summary of SUSY constraints from ATLAS using the pMSSM

The LHC experiments typically present their results for supersymmetry searches in terms of simplified low-scale models. These models can fail to capture the complexity of more realistic SUSY scenarios, in which many different sparticles have competing production and decay mechanisms; consideration of which can reduce the lower limits on sparticle masses. We have reinterpreted 22 of the most up-to-date ATLAS new physics searches in terms of the more general phenomenological- MSSM, a subset of the full MSSM containing the 19 most relevant parameters. This provides an ideal laboratory to study the impact of ATLAS searches during run 1 of the LHC. More than 300,000 pMSSM model points were studied, each satisfying all relevant experimental constraints including Dark Matter, heavy flavour and precision electroweak measurements. The results allow one to see where simplified model limits are robust, and where there is room for new physics still to be hiding, in some cases even at surprisingly low masses. This is the first time such a large-scale study of this kind has been attempted by an LHC collaboration.