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Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron

Aaltonen, T; Abazov, VM; Abbott, B; Acharya, BS; Adams, M; Adams, T; Agnew, JP; ... Zucchelli, S; + view all (2018) Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron. Physical Review Letters , 120 (4) , Article 042001. 10.1103/PhysRevLett.120.042001. Green open access

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Abstract

The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of \sqrt s =1.96 TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is A_{\mathrm{FB}}^{t\bar{t}} = 0.128 \pm 0.025. The combined inclusive and differential asymmetries are consistent with recent standard model predictions.

Type: Article
Title: Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.120.042001
Publisher version: https://doi.org/10.1103/PhysRevLett.120.042001
Language: English
Additional information: © 2018 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/).
Keywords: Hadron-hadron interactions, Hypothetical particle physics models, Particle production, Quantum chromodynamics, Top quark
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.ucl.ac.uk/id/eprint/10043465
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