Quarkonium Decays and Production in NRQCD
arXiv:hep-ph/0007003
Abstract
Some examples of the most recent applications of the NRQCD factorization approach to quarkonium phenomenology are presented. In the first part of the talk the NLO calculations for $\chicj$ and decays rates are compared to the data and the results critically analyzed. In the second part, I show how information on the non-perturbative matrix elements can be extracted from the hadronic fixed-target experiments and eventually used to test their universality.
14 pages, 2 figures. Invited talk presented at 5th Workshop on QCD, Villefranche-sur-Mer, France, 3-7 Jan 2000