Top quark production at threshold with O(alpha_s^2) accuracy

Abstract

We calculate the next-to-next-to-leading order correction to the cross section for top quark pair production in e+e- annihilation in the threshold region, resumming all O [ (alpha_s/beta)^n (alpha_s^2, beta^2, alpha_s beta) ] terms of perturbation series. We find that the magnitude of the NNLO correction is comparable to the size of the NLO corrections.

15 pages, Latex, one figure, some misprints corrected

References in corpus (3)

• The static potential in QCD - a full Two-Loop Calculation
• Two-loop QCD corrections to the heavy quark pair production cross section in e+e- annihilation near the threshold
• Perturbative O(alpha_s^2) Corrections to the Hadronic Cross Section Near Heavy Quark-Antiquark Thresholds in e+e- Annihilation

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