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arXiv · hep-ph/9801397

Top Quark Pair Production at Threshold: Complete Next-to-next-to-leading Order Relativistic Corrections

A. H. Hoang·T. Teubner
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Abstract

The complete next-to-next-to-leading order (i.e. $O(v^2)$, $O(v α_s)$ and $O(α_s^2)$) relativistic corrections to the total photon mediated $t\bar t$ production cross section at threshold are presented in the framework of nonrelativistic quantum chromodynamics. The results are obtained using semi-analytic methods and ``direct matching''. The size of the next-to-next-to-leading order relativistic corrections is found to be comparable to the size of the next-to-leading order ones.

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A. H. Hoang, T. Teubner. 1998-01-23. Top Quark Pair Production at Threshold: Complete Next-to-next-to-leading Order Relativistic Corrections. https://doi.org/10.1103/physrevd.58.114023

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