CMS-PAS-TOP-23-005

CMS-PAS-TOP-23-005
Measurement of the inclusive $\mathrm{t\bar{t}}$ cross section in final states with one lepton and additional jets at 5.02 TeV with 2017 data
CMS Collaboration
11 April 2024

Abstract: A measurement of the top quark pair production cross section in proton-proton collisions at a centre-of-mass energy of 5.02 TeV is presented. The data were collected in a low-energy and low-intensity LHC run in autumn 2017, and correspond to an integrated luminosity of 302 pb $^{-1}$ . The measurement is performed using events with one electron or muon, and multiple jets. Events are classified based on the number of all reconstructed jets and of the b-tagged jets; the signal selection includes the usage of multivariate analysis techniques. The measured cross section is 61.4 $\pm$ 1.6 (stat) $^{+2.7}_{-2.6}$ (syst) $\pm$ 1.2 (lumi) pb. A combination with the result in the dilepton channel based on the same data set results in a value of 61.2 $^{+1.6}_{-1.5}$ (stat) $^{+2.6}_{-2.3}$ (syst) $\pm$ 1.2 (lumi) pb, in agreement with the standard model prediction of 69.5 $^{+2.9}_{-3.1}$ pb (at next-to-next-to-leading-order in QCD).
Links: CDS record (PDF) ; Physics Briefing ; CADI line (restricted) ; These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here.

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