Measurements of top-quark pair differential cross-sections in the <i>e</i>μ channel in <i>pp</i> collisions at √<i>s</i>=13 TeV using the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2846 more authors) (2017) Measurements of top-quark pair differential cross-sections in the <i>e</i>μ channel in <i>pp</i> collisions at √<i>s</i>=13 TeV using the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 77 (5). 292-.

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Abstract

This article presents measurements of [Formula: see text] differential cross-sections in a fiducial phase-space region, using an integrated luminosity of 3.2 fb[Formula: see text] of proton-proton data at a centre-of-mass energy of [Formula: see text] TeV recorded by the ATLAS experiment at the LHC in 2015. Differential cross-sections are measured as a function of the transverse momentum and absolute rapidity of the top quark, and of the transverse momentum, absolute rapidity and invariant mass of the [Formula: see text] system. The [Formula: see text] events are selected by requiring one electron and one muon of opposite electric charge, and at least two jets, one of which must be tagged as containing a <i>b</i>-hadron. The measured differential cross-sections are compared to predictions of next-to-leading order generators matched to parton showers and the measurements are found to be consistent with all models within the experimental uncertainties with the exception of the Powheg-Box [Formula: see text] Herwig++ predictions, which differ significantly from the data in both the transverse momentum of the top quark and the mass of the [Formula: see text] system.

Item Type: Article
Additional Information: 43 pages in total, author list starting page 27, 5 figures, 5 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2016-04/
Uncontrolled Keywords: ATLAS Collaboration, ATLAS Collaboration, ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 15 Jun 2017 14:55
Last Modified: 06 Oct 2023 22:10
DOI: 10.1140/epjc/s10052-017-4821-x
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3007918