The Study Of Anomalous Quartic Gauge Couplings Via VBS Process Of W?jj Production At The LHC

At the Large Hadron Collider,the vector boson scattering process provide ideal conditions to searching for new physics beyond the Standard Model.In addition,vector boson scattering at the Large Hadron Collider is sensitive to anomalous quartic gauge couplings.The ATLAS and CMS experiments have set constrains on aQGC through measurements of the VBS processes.Also,the measurement of the polarization fraction of W and Z bosons via the VBS process is a fundamental test of electroweak symmetry breaking.Due to the violation of parity symmetry,polarization can be measured by angular distribution of the final states of weak decays of W and Z bosons,and polarization is also an important tool in the search for new physics.In this paper,we investigate the aQGC contribution to W ?jj production at the LHC with(?)=13 TeV in the context of the Standard Model effective field theory.The validity of SMEFT is investigated and ensured by using the partial-wave unitarity bound.To enhance the statistical significance,we analyze the kinematic and polarization features of the aQGC signals in detail.We find that the polarization effects induced by aQGC are unique and can discriminate the signals from the SM backgrounds well.With the proposed event selection strategy,we obtain the constraints on the coefficients of dimension-8 operators with current luminosity.The results indicate that the process pp?W?jj is powerful to search for the OM2,3,4,5 and OT5,6,7 operators.