Top quark production near threshold: NNLO QCD correction

Details Top quark production near threshold: NNLO QCD correction Top quark production near threshold: NNLO QCD correction

1998-08-28

arxiv.org/abs/hep-ph/9808463v4

Phys.Lett.B457:170-176,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 12 pages, 4 ps figures, journal version

Scientific paper

10.1016/S0370-2693(99)00507-9

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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