New developments in the theory of heavy quarkonia
arXiv:hep-ph/9608362
Abstract
The new approach to decays of heavy quarkonia, based on factorization and expansions in powers of the relative velocity of the valence quarks is reviewed.
Lecture at the 36-th Kraków Summer School of Theoretical Physics, Zakopane June 1996. 11 pages, no figures, Latex file