2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/129272The bottomonium and charmonium systems have long proved to be a rich source of QCD physics. Recent CLEO contributions in three disparate areas are presented: (1) the study of quark and gluon hadronization using $Υ$ decays; (2) the interpretation of heavy charmonium states, including non-$c\bar{c}$ candidates; and (3) the exploration of light quark physics using the decays of narrow charmonium states as a well-controlled source of light quark hadrons.Proceedings for the QCD session of the XLII Recontres de Moriond, March 17 - 24, 2007; 6 pages, 5 figuresHigh Energy Physics - Experimenttext