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

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

1998-01-23

arxiv.org/abs/hep-ph/9801397v1

Phys.Rev. D58 (1998) 114023

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, latex, two postscript figures included

Scientific paper

10.1103/PhysRevD.58.114023

The complete next-to-next-to-leading order (i.e. $O(v^2)$, $O(v \alpha_s)$ and $O(\alpha_s^2)$) 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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