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High Energy Physics - Phenomenology

arXiv:1610.07897 (hep-ph)
[Submitted on 25 Oct 2016 (v1), last revised 27 Oct 2016 (this version, v2)]

Title:Top-quark pair production at next-to-next-to-leading order QCD in electron positron collisions

Authors:Long Chen, Oliver Dekkers, Dennis Heisler, Werner Bernreuther, Zong-Guo Si
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Abstract:We set up a formalism, within the antenna subtraction framework, for computing the production of a massive quark-antiquark pair in electron positron collisions at next-to-next-to-leading order in the coupling $\alpha_s$ of quantum chromodynamics at the differential level. Our formalism applies to the calculation of any infrared-safe observable. We apply this set-up to the production of top-quark top antiquark pairs in the continuum. We compute the production cross section and several distributions. We determine, in particular, the top-quark forward-backward asymmetry at order $\alpha_s^2$. Our result agrees with previous computations of this observable.
Comments: Latex, 33 pages, reference added
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
Report number: TTK-16-41, MITP/16-111
Cite as: arXiv:1610.07897 [hep-ph]
  (or arXiv:1610.07897v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1610.07897
Related DOI: https://doi.org/10.1007/JHEP12%282016%29098

Submission history

From: Werner Bernreuther [view email]
[v1] Tue, 25 Oct 2016 14:37:16 UTC (725 KB)
[v2] Thu, 27 Oct 2016 08:19:47 UTC (725 KB)
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