CMS-PAS-TOP-21-011

CMS-PAS-TOP-21-011
Measurement of the cross section of top quark-antiquark pair production in association with a W boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV
CMS Collaboration
March 2022

Abstract: The cross section for the production of a top quark-antiquark pair in association with a W boson in proton-proton collisions at a center-of-mass energy of 13 TeV is measured in a data sample recorded by the CMS experiment that corresponds to an integrated luminosity of 138 fb $^{-1}$ . Events with two or three leptons, electrons or muons, and additional jets are selected. A cross section of 868 $\pm$ 40 (stat) $^{+52}_{-50}$ (syst) fb is measured. The production cross sections of a top quark pair with a W $^{+}$ and a W $^{-}$ boson are measured as 553 $^{+30}_{-29}$ (stat) $^{+31}_{-30}$ (syst) fb and 343 $\pm$ 26 (stat) $\pm$ 25 (syst) fb, respectively, and the corresponding ratio of the two cross sections is 1.61 $^{+0.15}_{-0.14}$ (stat) $^{+0.07}_{-0.05}$ (syst). The measured cross sections for the studied processes are in agreement with standard model predictions within two standard deviations.
Links: CDS record (PDF) ; CADI line (restricted) ; These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here.

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