Abstract
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 tt¯ 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 tt¯ cross-section within the experimental acceptance is also measured.
Original language | English |
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Article number | 135797 |
Number of pages | 22 |
Journal | Phys. Lett. B |
Volume | 810 |
Early online date | 22 Sept 2020 |
DOIs | |
Publication status | Published - 10 Nov 2020 |
Keywords
- hep-ex
ASJC Scopus subject areas
- Nuclear and High Energy Physics