Measurement of the W + Jets Production Cross Section with ATLAS

The associated production of jets with a W-boson provides a proving ground for perturbative QCD predictions and a formidable background to other interesting processes in the Standard Model and beyond. In both the electron and muon decay modes of the W-boson, measurements using the ATLAS detector are presented. These include cross sections as a function of jet multiplicity, jet transverse momentum, and the sum of transverse momenta of energetic jets and leptons in each event, as well as ratios of cross sections. The results are corrected to particle level and compared with predictions from Monte Carlo simulations and next-to-leading order perturbative QCD calculations.