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- W4385495897 abstract "The production of a top quark-antiquark pair in association with a W boson ($mathrm{tbar{t}}$W) is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The analyzed data was recorded by the CMS experiment at the CERN LHC and corresponds to an integrated luminosity of 138 fb$^{-1}$. Events with two or three leptons (electrons and muons) and additional jets are selected. In events with two leptons, a multiclass neural network is used to distinguish between the signal and background processes. Events with three leptons are categorized based on the number of jets and of jets originating from b quark hadronization, and the lepton charges. The inclusive $mathrm{tbar{t}}$W production cross section in the full phase space is measured to be 868 $pm$ 40 (stat) $pm$ 51 (syst) fb. The $mathrm{tbar{t}}$W$^+$ and $mathrm{tbar{t}}$W$^-$ cross sections are also measured as 553 $pm$ 30 (stat) $pm$ 30 (syst) and 343 $pm$ 26 (stat) $pm$ 25 (syst) fb, respectively, and the corresponding ratio of the two cross sections is found to be 1.61 $pm$ 0.15 (stat) $^{+0.07}_{-0.05}$ (syst). The measured cross sections are larger than but consistent with the standard model predictions within two standard deviations, and represent the most precise measurement of these cross sections to date." @default.
- W4385495897 created "2023-08-03" @default.
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