Probing the Electroweak Sector with Vector-boson Fusion and Vector-boson Scattering Processes at the LHC

Measurements of single- and multiboson production at the LHC probe the electroweak gauge structure of the Standard Model which predicts trilinear and quartic self interactions of the $W$ and $Z$ bosons, and the photon. The scattering of two electroweak gauge bosons to a single gauge boson (vector-boson fusion) and a diboson pair (vector-boson scattering) are a sensitive probe to trilinear and quartic self interactions, respectively. Such processes have become experimentally accessible with the data from the second experimental phase of the LHC. The agreement of the measurements with the Standard Model prediction is quantified by constraining Effective Field Theory operators that modify the trilinear and quartic gauge-boson self interactions.