Top-quark forward-backward asymmetry in e+e- annihilation at NNLO in QCD

Abstract

We report on a complete calculation of electroweak production of top quark pairs in $e^{+}{e}^{-}$ annihilation at next-to-next-to-leading order in Quantum Chromodynamics. Our setup is fully differential and can be used to calculate any infrared-safe observable. Especially we calculated the next-to-next-to-leading order corrections to top-quark forward-backward asymmetry and found sizable effects. Our results show a large reduction of the theoretical uncertainties in predictions of the forward-backward asymmetry, and allow a precision determination of the top quark electroweak couplings at future $e^{+}{e}^{-}$ colliders.

6 pages, 5 figures. arXiv admin note: text overlap with arXiv:1408.5150

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Cited by in corpus (13)

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• Top-quark pair production at next-to-next-to-leading order QCD in electron positron collisions
• NLO QCD corrections to off-shell top-antitop production with semi-leptonic decays at lepton colliders
• Top and bottom quark forward-backward asymmetries at next-to-next-to-leading order QCD in (un)polarized electron positron collisions
• Reanalysis of the top-quark pair production via the $e^{+}{e}^{-}$ annihilation near the threshold region up to N${}^3$LO QCD corrections
• Top quark physics in the Large Hadron Collider era
• Revisiting the top-quark pair production at future $e^{+}{e}^{-}$ colliders
• Analytic NNLO QCD corrections to top quark pair production in electron-positron collisions
• Electroweak radiative corrections to polarized top quark pair production
• IRC-safe jet flavour at leading power
• Forward-backward asymmetries of the heavy quark pair production in $e^{+}{e}^{-}$ collisions at $\mathcal{O}({\alpha }_s^2)$