Probing Physics in the Standard Model and Beyond in gauge boson scattering with the CMS experiment at the Large Hadron Collider

The study of multi-boson production processes is an important test of the standard model (SM). The WW production at hadron colliders is sensitive to the properties of electroweak (EW) boson self-interactions and provides a test of the predictions of perturbative quantum chromodynamics (QCD) and the EW theory.

It also constitutes a large background in the measurement of Higgs boson production, as well as in searches for physics beyond the SM. In this work, a measurement of the WW pair production cross section in proton-proton collisions at 13.6 TeV is performed for the first time in a final state that includes a hadronically decaying tau lepton.