Yetkin, Elif Aslı2022-10-172022-10-172022-071029-8479https://hdl.handle.net/11411/4580https://doi.org/10.1007/JHEP07(2022)032Abstract: The associated production of a W and a Z boson is studied in final states with multiple leptons produced in proton-proton (pp) collisions at a centre-of-mass energy of 13 TeV using 137 fb?1 of data collected with the CMS detector at the LHC. A measurement of the total inclusive production cross section yields ?tot(pp ? WZ) = 50.6 ± 0.8 (stat) ± 1.5 (syst) ± 1.1 (lumi) ± 0.5 (theo) pb. Measurements of the fiducial and differential cross sections for several key observables are also performed in all the final-state lepton flavour and charge compositions with a total of three charged leptons, which can be electrons or muons. All results are compared with theoretical predictions computed up to next-to-next-to-leading order in quantum chromodynamics plus next-to-leading or- der in electroweak theory and for various sets of parton distribution functions. The results include direct measurements of the charge asymmetry and the W and Z vector boson polarization. The first observation of longitudinally polarized W bosons in WZ production is reported. Anomalous gauge couplings are searched for, leading to new constraints on beyond-the-standard-model contributions to the WZ triple gauge coupling. [Figure not available: see fulltext.] © 2022, The Author(s).eninfo:eu-repo/semantics/openAccessHadron-Hadron ScatteringParticle Correlations and FluctuationsArticle2-s2.0-8513597721010.1007/JHEP07(2022)032Q2WOS:000825333400006