2020/06/30 by ATLAS Collaboration, G. Aad, B. Abbott +98
Physics and Astronomy · #Astrophysics #Electron #Galaxy #Hadron #High-Energy Particle Collisions Research #Lepton #Luminosity #Muon #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Perturbative QCD #Physics #Quantum chromodynamics #hep-ex
paper · pdf · doi:10.1016/j.physletb.2020.135797
published as Phys. Lett. B 810 (2020) 135797 · 38 pages in total, author list starting page 22, 3 figures, 3 tables, submitted to PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2020-02/
openalex created_date 2020/07/29 · openalex publication_date 2020/09/22 · arxiv created 2020/11/09 · arxiv updated 2020/11/10 · openalex updated_date 2026/08/05
The top anti-top quark production cross-section is measured in the lepton+jets channel using proton–proton collision data at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 139 fb −1 . Events with exactly one charged lepton and four or more jets in the final state, with at least one jet containing b -hadrons, are used to determine the t t ¯ production cross-section through a profile-likelihood fit. The inclusive cross-section is measured to be σ inc = 830 ± 0.4 (stat.) ± 36 (syst.) ± 14 (lumi.) pb with a relative uncertainty of 4.6%. The result is consistent with theoretical calculations at next-to-next-to-leading order in perturbative QCD. The fiducial t t ¯ cross-section within the experimental acceptance is also measured.