Measurement of differential t t ¯ production cross sections in the full kinematic range using lepton+jets events from proton-proton collisions at s =13 TeV MEASUREMENT of DIFFERENTIAL ... A. TUMASYAN et al.

CMS Collaboration, Freya Blekman, Emil Sørensen Bols, Jorgen D'Hondt, Martin Delcourt, Hesham El Faham, Steven Lowette, Seth Moortgat, Alexander Morton, Denise Müller, Abanti Ranadhir Sahasransu, Stefaan Tavernier, Walter Van Doninck, Petra Van Mulders

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Abstract

Measurements of differential and double-differential cross sections of top quark pair ($\text{t}\overline{\text{t}}$) production are presented in the lepton+jets channels with a single electron or muon and jets in the final state. The analysis combines for the first time signatures of top quarks with low transverse momentum $p_\text{T}$, where the top quark decay products can be identified as separated jets and isolated leptons, and with high $p_\text{T}$, where the decay products are collimated and overlap. The measurements are based on proton-proton collision data at $\sqrt{s} = $ 13 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 137 fb$^{-1}$. The cross sections are presented at the parton and particle levels, where the latter minimizes extrapolations based on theoretical assumptions. Most of the measured differential cross sections are well described by standard model predictions with the exception of some double-differential distributions. The inclusive $\text{t}\overline{\text{t}}$ production cross section is measured to be $\sigma_{\text{t}\overline{\text{t}}} = $ 791 $\pm$ 25 pb, which constitutes the most precise measurement in the lepton+jets channel to date.
Original languageEnglish
Article number092013
Number of pages93
JournalPhys. Rev. D
Volume104
Issue number9
DOIs
Publication statusPublished - 30 Nov 2021

Bibliographical note

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-20-001 (CMS Public Pages)

Keywords

  • hep-ex

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