Description
One motivation for colliding protons at multi-TeV energies is the existence of cosmological Dark Matter. At the LHC we hope to be able to produce and measure new weakly interacting particles which constitute all or a part of the Dark Matter in the universe. I will review the status of ATLAS searches for the most popular yet still hypothetical model of physics beyond the Standard Model, Supersymmetry, with a focus on canonical searches for Dark Matter candidates. In the second part I will discuss a more recent approach to interpreting LHC searches in terms of Dark Matter and present the ATLAS mono-jet analysis which looks for a signal in events with a single energetic jet and large missing transverse energy. I will show how this approach allows to convert LHC measurements to quantities accessible by complementary experiments searching for particle Dark Matter (directly or indirectly).