2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48114We investigate the occurrence of power terms in the running QCD coupling by analysing non-perturbative measurements of alpha_s (p) at low momenta obtained from the lattice three-gluon vertex. Our exploratory study provides some evidence for power contributions to alpha_s (p) proportional to 1/p^2. Possible implications for physical observables are discussed.16 pages, 2 Postscript figures, uses epsfig.sty and amssymb.sty. Slight changes to the abstract and substantial enlargement of the Conclusions sectionHigh Energy Physics - PhenomenologyHigh Energy Physics - Latticetext