Same Sign WW Studies Using EFT at LHC
2021
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 \(pp \rightarrow 2jets\) + \(W^{+}W^{+}\) \(\rightarrow j j l^{+} \nu l^{'+} \nu ^{'}\) 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 3\(ab^{-1}\) 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.
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