Measurement of the t(t)over-bar production cross-section in the lepton plus jets channel at root s=13 TeV with the ATLAS experiment
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AbstractThe 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 root 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 a production cross-section through a profile-likelihood t (t) over bar. The inclusive cross-section is measured to be alpha(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) over bar cross-section within the experimental acceptance is also measured.
All Author(s) ListATLAS Collaboration
Journal namePhysics Letters B
Year2020
Month11
Volume Number810
PublisherELSEVIER
Article number135797
ISSN0370-2693
eISSN1873-2445
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesAstronomy & Astrophysics;Physics, Nuclear;Physics, Particles & Fields;Astronomy & Astrophysics;Physics

Last updated on 2021-02-05 at 00:29