Data-driven Estimations of Z, W and Top Backgrounds
  The Standard Model processes of W, Z and top quark production in association with jets constitute a major background to searches for Supersymmetry at the LHC. We describe recent work performed in the ATLAS Collaboration to estimate these backgrounds for a basic SUSY selection, and we discuss methods to derive them from the first ATLAS data. 
Mark Hodgkinson (for the ATLAS Collaboration)