2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40760The analytic continuation of the operator product expansion of the scattering amplitude allows to compute the heavy-quarkonium hadron total cross section. The energy dependence of the Upsilon and Upsilon' cross sections with a proton is discussed.4 pages, 2 figures. Talk given at XXXVIth Rencontres de Moriond: QCD and High Energy Hadronic Interactions, Les Arcs, France, 17-24 March 2001High Energy Physics - Phenomenologytext