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Addendum to ‘Measurement of the tt ¯ production cross-section using eµ events with b-tagged jets in pp collisions at √s = 7 and 8 TeV with the ATLAS detector’

Aad, G; Abbott, B; Abdallah, J; Khalek, SA; Abdinov, O; Aben, R; Abi, B; ... Zwalinski, L; + view all (2016) Addendum to ‘Measurement of the tt ¯ production cross-section using eµ events with b-tagged jets in pp collisions at √s = 7 and 8 TeV with the ATLAS detector’. [Addendum]. The European Physical Journal C , 76 (11) , Article 642. 10.1140/epjc/s10052-016-4501-2. Green open access

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Abstract

The ATLAS measurement of the inclusive top quark pair (tt ¯) cross-section σtt ¯ in proton–proton collisions at √s = 8 TeV has been updated using the final 2012 luminosity calibration. The updated cross-section result is: σtt ¯ = 242.9 ± 1.7 ± 5.5 ± 5.1 ± 4.2 pb, where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, knowledge of the integrated luminosity and of the LHC beam energy. The result is consistent with theoretical QCD calculations at nextto-next-to-leading order. The measurement of the ratio of tt ¯ cross-sections at √s = 8 TeV and √s = 7 TeV, and the √s = 8 TeV fiducial measurement corresponding to the experimental acceptance of the leptons, have also been updated.

Type: Article
Title: Addendum to ‘Measurement of the tt ¯ production cross-section using eµ events with b-tagged jets in pp collisions at √s = 7 and 8 TeV with the ATLAS detector’
Open access status: An open access version is available from UCL Discovery
DOI: 10.1140/epjc/s10052-016-4501-2
Publisher version: http://doi.org/10.1140/epjc/s10052-016-4501-2
Language: English
Additional information: © CERN for the benefit of the ATLAS collaboration 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Keywords: Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
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.ucl.ac.uk/id/eprint/1551480
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