NNLL top-antitop production at threshold

Abstract

We present an update to the NNLL RG-improved QCD prediction of top-antitop production in electron-positron annihilation at threshold. It includes for the first time a complete NNLL resummation of ultrasoft logarithms, which are dominant at this order and give a sizable correction. The renormalization scale dependence of the total resonance cross section decreases substantially compared to earlier predictions, where the ultrasoft logarithms were included only partially.

8 pages, 2 figures, to appear in the proceedings of RADCOR2011; footnote added, references corrected

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Cited by in corpus (8)

• The top quark and Higgs boson masses and the stability of the electroweak vacuum
• Top quark mass measurements at and above threshold at CLIC
• Determination of the top quark mass circa 2013: methods, subtleties, perspectives
• The Top-Antitop Threshold at the ILC: NNLL QCD Uncertainties
• Renormalization Group Improved Bottom Mass from Upsilon Sum Rules at NNLL Order
• Top quark precision physics at the International Linear Collider
• Automated NLO QCD Corrections with WHIZARD
• Non-resonant effects in the top-antitop resonance region