I will discuss the current status of the light neutralino dark matter scenario within the minimal supersymmetric standard model (MSSM) taking into account latest results from the LHC.
Constraints from the dark matter relic abundance lead us to a manageable simplified model defined by a subset of MSSM parameters, within which we could reinterpret recent searches for electroweak supersymmetric particle production based on events with multi-tau plus missing transverse momentum, performed by the ATLAS collaboration. In this way we could derive stringent constraints on the light neutralino parameter space. In combination with further experimental information from the LHC, in particular the bounds on possible invisible Higgs decays, we obtained a lower bound on the lightest neutralino that is stronger than any current limit set by underground direct dark matter searches or indirect detection experiments.
