2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/186948Using Dyson-Schwinger equations we obtain an ultraviolet asymptotics for the dynamical mass of quark in QCD. We also determine a numerical value for the πmeson decay constant f_π.Electronic version of the published paper, latex, 4 pagesHigh Energy Physics - Phenomenologytext