Diboson Search at ATLAS

Dibosons are key to understanding the electroweak symmetry breaking mechanism, their coupling strengths being a direct indication of the latter. Diboson decays are a serious background to many physics processes, such as Higgs, Technicolor decays, etc. Diboson channels may provide a window into the physics beyond the Standard Model, if the so-called Anomalous Triple Gauge Couplings are observed. The LHC experiments will explore the diboson channels at a higher energy range than the currently active D/{O}~and CDF experiments at the Tevatron, with the LHC rates exceeding those of the Tevatron by a factor of 100-1000. In this article we will focus on the methods of measuring the properties of one of the diboson channels, the $W^+W^-$ with the ATLAS experiment. The $W^+Z$, $ZZ$, $W^{pm}gamma$ and $Zgamma$, diboson states in the context of their leptonic decays have also been analyzed by ATLAS and are discussed elsewhere.