TL;DR
This paper discusses recent CMS results on Vector Boson Scattering, focusing on electroweak Z boson pair production with jets at 13 TeV, comparing multivariate and matrix element analysis techniques.
Contribution
It presents a detailed comparison of multivariate classifier and matrix element techniques for VBS analysis in CMS data.
Findings
Electroweak Z boson pair production observed with 2.7 sigma significance.
Matrix element approach yielded an expected significance of 1.2 sigma.
The paper provides insights into analysis techniques for VBS at the LHC.
Abstract
In these proceedings we discuss the family of Vector Boson Scattering (VBS) processes, in particular we look at a very recent result from the CMS collaboration where a search was performed for VBS in the four-lepton and two-jet final state using proton-proton collisions at 13 TeV. The electroweak production of two Z bosons in association with two jets was measured with an observed (expected) significance of 2.7 (1.6) standard deviations, using a multivariate classifier. Additionally an expected significance of 1.2 standard deviations was found using matrix elements techniques. In this work we discuss the latter approach in detail.
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