The inclusive WZ production cross section is measured in proton-proton collisions at a centre-of-mass energy of 13.6 TeV, using data collected during 2022 with the CMS detector, corresponding to an integrated luminosity of 34.7fb−1. The measurement uses multileptonic final states and a simultaneous likelihood fit to the number of events in four different lepton flavour categories: eee, eeμ, μμe, and μμμ. The selection is optimized to minimize the number of background events, and relies on an efficient prompt lepton discrimination strategy. The WZ production cross section is measured in a phase space defined within a 30 GeV window around the Z boson mass, as σtotal(pp → WZ) = 55.2±1.2 (stat)±1.2 (syst)±0.8 (lumi)±0.3 (theo) pb. In addition, the cross section is measured in a fiducial phase space closer to the detector- level requirements. All the measurements presented in this paper are in agreement with standard model predictions.
Measurement of the inclusive WZ production cross section in pp collisions at $$ \sqrt{\textrm{s}} $$ = 13.6 TeV
Alexe, C.;Bruschini, D.;
2025
Abstract
The inclusive WZ production cross section is measured in proton-proton collisions at a centre-of-mass energy of 13.6 TeV, using data collected during 2022 with the CMS detector, corresponding to an integrated luminosity of 34.7fb−1. The measurement uses multileptonic final states and a simultaneous likelihood fit to the number of events in four different lepton flavour categories: eee, eeμ, μμe, and μμμ. The selection is optimized to minimize the number of background events, and relies on an efficient prompt lepton discrimination strategy. The WZ production cross section is measured in a phase space defined within a 30 GeV window around the Z boson mass, as σtotal(pp → WZ) = 55.2±1.2 (stat)±1.2 (syst)±0.8 (lumi)±0.3 (theo) pb. In addition, the cross section is measured in a fiducial phase space closer to the detector- level requirements. All the measurements presented in this paper are in agreement with standard model predictions.| File | Dimensione | Formato | |
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JHEP04(2025)115.pdf
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