Top quark production near threshold: NNLO QCD correction
Aug, 199812 pages
Published in:
- Phys.Lett.B 457 (1999) 170-176
e-Print:
- hep-ph/9808463 [hep-ph]
Report number:
- WUE-ITP-98-036
View in:
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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
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