Observation and Measurements of Vector-Boson Scattering at the ATLAS Detector

The scattering of electroweak bosons tests the gauge structure of the Standard Model and is sensitive to anomalous quartic gauge couplings. In this talk, we present recent results on vector-boson scattering from the ATLAS experiment using proton-proton collisions at 13 TeV of center-of-mass energy at LHC. This includes the observation of ZZ, WZ, and same-sign-WW production via vector-boson scattering along with a measurement of VV production in semileptonic final states. The results can be used to constrain new physics that manifests as anomalous electroweak-boson self interactions. Finally, Predicted cross sections for electroweak scattering of two same-sign W bosons in association with two jets are compared for a number of Monte Carlo configurations.