Heavy Quarkonium Physics beyond the Next-to-Next-to-Leading Order of NRQCD

Abstract

In this talk I briefly review the recent progress in calculation of the high order corrections to the parameters of the nonrelativistic heavy quark-antiquark system in the effective theory approach.

Comments: 8 pages LaTeX, talk presented at the High Energy Physics International Conference on Quantum Chromodynamics (QCD-00), Montpellier, France, 6-12 July 2000