W± Z and Diboson physics at ATLAS

Abstract

A summary of recent results from the ATLAS experiment at the LHC in the field of W± Z and diboson physics is presented. Inclusive W± and Z production cross sections were measured di erentially and compared to different PDF sets. The ratio of the total W± and Z cross section was used to measure the strange quark density in the light quark sea. The first measurement of tau polarisation made at a hadron collider is presented. Cross section measurements for the diboson processes W±γ, Zγ, W±W−, W±Z and ZZ are presented. The diboson measurements are used to set limits on anomalous Triple Gauge Couplings; the results are consistent with the Standard Model values.