Forkel, Hilmar [UNESP]2022-04-292022-04-292007-01-01Proceedings of the Conference on Continuous Advances in QCD 2006, p. 383-389.http://hdl.handle.net/11449/227406Several key problems of QCD sum rules in the spin-0 glueball channels are resolved by implementing nonperturbative short-distance physics from direct instantons and topological charge screening. A lattice-based instanton size distribution and the IR renormalization of the nonperturbative Wilson coeffcients are also introduced. Results of a comprehensive quantitative sum rule analysis are reviewed and their implications discussed.383-389engTrabalho apresentado em evento10.1142/9789812708267_00472-s2.0-84891111274