The scattering of vector bosons is a fundamental prediction of the Standard Model, closely linked to the Higgs mechanism. The study of this process at the TeV scale tests the unique role of the Higgs boson in generating the masses of the W and Z bosons. The LHC, the only accelerator in the world capable of reaching the necessary energies, plays a vital role in this field, and its results will define the state of the art in this area of research for the foreseeable future.
The vector boson scattering process, pp -> VV+jj+X, where V=W,Z, is characterized by the presence in the final state of leptons from the decay of the W or Z, and of high-energy jets in the forward region of the detector. At the LHC, the scattering processes WW, WZ and ZZ have been studied with Run 2 data. The next step for the community in this field is to refine the signal visibility through improved event selections, better background rejection, and the larger samples collected in Run 3. The predictions of the Standard Model can then be confronted with the results of the data analysis, and the presence of new physics in these interactions can be tested. The expected results represent a significant improvement in measurement accuracy and provide excellent preparation for the operation of the HL-LHC.