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First measurement of the top quark pair production cross section in proton-proton collisions at s = 13.6 TeV

  • Università G. Marconi
  • University of Trento
  • CERN
  • A. Alikhanian Yerevan Institute of Physics
  • Yerevan State University
  • Austrian Academy of Sciences
  • TU Wien
  • University of Antwerp
  • Arab Academy for Science, Technology and Maritime Transport
  • Université libre de Bruxelles
  • Vrije Universiteit Brussel

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

The first measurement of the top quark pair (tt¯) production cross section in proton-proton collisions at s = 13.6 TeV is presented. Data recorded with the CMS detector at the CERN LHC in Summer 2022, corresponding to an integrated luminosity of 1.21 fb−1, are analyzed. Events are selected with one or two charged leptons (electrons or muons) and additional jets. A maximum likelihood fit is performed in event categories defined by the number and flavors of the leptons, the number of jets, and the number of jets identified as originating from b quarks. An inclusive tt¯ production cross section of 881 ± 23 (stat + syst) ± 20 (lumi) pb is measured, in agreement with the standard model prediction of 924−40+32 pb.

Original languageEnglish
Article number204
JournalJournal of High Energy Physics
Volume2023
Issue number8
DOIs
StatePublished - Sep 2023

Keywords

  • Hadron-Hadron Scattering
  • Top Physics

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