Measurement of vector boson plus photon production with the ATLAS detector and associated constraints on new physics

We present the measurement of the integrated and differential fiducial cross sections for the production of a W or Z boson in association with a high energy photon, using ATLAS pp collision data at sqrt(s) = 7 TeV and an integrated luminosity of L = 4.6 fb-1. Events are selected using leptonic decays of the W (W(e nu; mu nu)) and Z (Z(e e; mu mu; nu nu)) bosons. The data are used to test\nthe Electroweak sector of the Standard Model and search for evidence of new phenomena. The measurements are used to probe anomalous triple gauge boson couplings and to search for the production of vector resonances decaying to Zgamma andWgamma.