Aad, G;
Abbott, B;
Abbott, DC;
Abed Abud, A;
Abeling, K;
Abhayasinghe, DK;
Abidi, SH;
... Araujo Pereira, R; + view all
(2020)
Measurement of the tt¯ production cross-section in the lepton+jets channel at s=13 TeV with the ATLAS experiment.
Physics Letters B
, 810
, Article 135797. 10.1016/j.physletb.2020.135797.
(In press).
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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 σinc = 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.
| Type: | Article |
|---|---|
| Title: | Measurement of the tt¯ production cross-section in the lepton+jets channel at s=13 TeV with the ATLAS experiment |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2020.135797 |
| Publisher version: | https://doi.org/10.1016/j.physletb.2020.135797 |
| Language: | English |
| Additional information: | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10112310 |
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