Same Sign WW Studies Using EFT at LHC

Study of discovery potential of new physics in the Effective Field Theory (EFT) framework for the same-sign WW Vector Boson Scattering (VBS) process at the High-Luminosity (HL) and High-Energy Large Hadron Collider (HE-LHC) is done. We focus on purely leptonic decays of the W and as a final state in proton-proton collisions, look for pp→2jets + W+W+ →jjl+νl′+ν′ decay at the LHC and the WW invariant mass cannot be determined experimentally. We study the effect of a single dim-8 operator that alters WWWW quartic gauge coupling and for hints of new physics, we look for the deviations from the Standard Model case. Work at 27 TeV at HE-LHC is reported for both positive and negative values of operators and is compared with previously done work at 14 TeV with 3ab−1 luminosity. In this paper, we present comparison results for two dim-8 operators. It is observed that discovery regions for the individual dim-8 operators at HE-LHC shift to lower values of the Wilson coefficients but the overall discovery potential does not get significantly enhanced.