Observation and measurements of vector-boson scattering with 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 document, we present recent results on vector-boson scattering from the ATLAS experiment using proton-proton collisions with a center-of-mass energy of at the LHC. This includes the observation of $ZZ$, $WZ$ , and same-sign-$WW$ production via vector-boson scattering along with a measurement of production ($V$ denotes $W$ or $Z$ boson) in semi-leptonic final states. The results can be used to constrain new physics that manifests as anomalous electroweak-boson self-interactions. Finally, predicted cross-sections for the electroweak scattering of two same-sign $W$ bosons in association with two jets are compared for a number of generators.