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Top quark production near threshold: NNLO QCD correction

Oleg Yakovlev
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Abstract

We calculate the cross section of the process e^+e^- \to t\bar t near threshold by resumming Coulomb-like terms with next-to-next-to-leading (NNLO) accuracy. The nonrelativistic Green function formalism and the method of ``direct matching'' are used. The NNLO correction turns out to be large, of the same size as the NLO correction. It changes the position and the normalization of the 1S-peak. The obtained results are compared with results existing in the literature.

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Oleg Yakovlev. 1999-12-01. Top quark production near threshold: NNLO QCD correction. https://doi.org/10.1016/s0370-2693(99)00507-9

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