Vector boson scattering results in CMS

Vector Boson Scattering (VBS) is a key production process to probe the electroweak symmetry breaking (EWSB) of the Standard Model (SM), since it involves both self-couplings of vector bosons and coupling with the Higgs boson. If the Higgs mechanism is not the sole source of electroweak symmetry breaking, the scattering amplitude deviates from the SM prediction at high scattering energy. Moreover, deviations may be detectable even if a new physics scale is higher than the reach of direct searches. Latest measurements of production cross sections of vector boson pairs in association with two jets in proton-proton (pp) collisions at $\sqrt{s} = 13$ TeV at the LHC are reported using a data set recorded by the CMS detector.