Top quark production near threshold: NNLO QCD correction

Aug, 1998
12 pages
Published in:
  • Phys.Lett.B 457 (1999) 170-176
e-Print:
Report number:
  • WUE-ITP-98-036

Citations per year

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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.
Note:
  • LaTeX, 12 pages, 4 ps figures, journal version Journal-ref: Phys.Lett. B457 (1999) 170-176
  • 12.38.Bx
  • 12.38.Cy
  • 13.85.Lg
  • 14.65.Ha
  • Top quark
  • Inclusive cross section
  • Perturbative calculations
  • electron positron: annihilation
  • top: pair production
  • top