Measurement of W Boson Helicity at ATLAS

The Standard Model predicts that the top quark almost always decays via the V-A charged current interaction to a W boson and a b quark. It also predicts the fractions of W bosons produced in each polarization state. A measurement of W boson helicity fractions significantly different from the SM values would be an indication of new physics. In this talk I will present results from a Monte Carlo study with an integrated luminosity of 730 pb-1 for the measurement of W boson helicity at ATLAS.