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| CMS-PAS-SMP-24-005 | ||
| Measurement of the inclusive WZ production cross section in pp collisions at $ \sqrt{s}= $ 13.6 TeV with the CMS experiment | ||
| CMS Collaboration | ||
| 19 July 2024 | ||
| Abstract: The inclusive WZ cross section is measured in proton-proton collisions at a centre-of-mass energy of 13.6 TeV, using 34.7 fb$ ^{-1} $ of data collected during 2022 with the CMS detector. The measurement is performed in multileptonic final states by performing a simultaneous likelihood fit to the number of events in four different lepton flavour categories: $ \mathrm{eee} $, $ \mathrm{ee}{\mu} $, $ {\mu}{\mu}\mathrm{e} $, $ {\mu}{\mu}{\mu} $. The selection is optimized to minimize the number of background events thanks to the usage of an efficient prompt lepton discrimination strategy. The WZ production cross section is measured in a phase space, defined around a 30 GeV window around the Z mass, as $ \sigma_{\text{total}} (pp \rightarrow \mathrm{WZ}) = $ 55.2 $ \pm $ 1.2 (stat) $ \pm $ 1.2 (syst) $ \pm $ 0.8 (lumi) $ \pm $ 0.1 (theo) pb. In addition, the cross section is also measured in a fiducial phase space, closer to the detector level requirements, as $ \sigma_{\text{fiducial}} (pp \rightarrow \mathrm{WZ}) = $ 297.6 $ \pm $ 6.4 (stat) $ \pm $ 6.4 (syst) $ \pm $ 4.2 (lumi) $ \pm $ 0.5 (theo) pb. | ||
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These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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