Global and pole duality applied tocandbquarks

Abstract
We investigate e+e duality in heavy-quark systems with application to the c- and b-quark sectors. An alternative duality formulation permits quark masses to be determined from "bound" quarkonium states alone. The c- and b-quark masses are found to be mc=1.45±0.05 GeV and mb=4.58±0.08 GeV, respectively.