Speaker
Description
Evidence of the vector boson scattering (VBS) phenomena was discovered in Run 1
of the ATLAS detector at the LHC in the same sign WW production channel. Since
the detector acquire more and more data in Run 2, the phenomena starts to be
accessible also in the ZZ channel. This channel is very clean because of the
small background other than comming from QCD and provides a good opportunity to
enlarge the knowledge of such rare processes. The multivariet analysis (MVA)
techniques are utilised to further extract the signal from QCD background. The
analysis strategy is to measure the cross-section of the ZZ in the VBS-enhanced
phase-space and than extract the electroweak VBS cross-section using the MVA
techniques. The study is also challenging the setting of limits on anomalous
quartic gauge coupling.
