2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49223We investigate a connection between a renormalon ambiguity of heavy quark mass and the gluon condensate contribution into the quark dispersion law related with a virtuality defining a displacement of the heavy quark from the perturbative mass-shell, which happens inside a hadron.6 pages, RevTeX4, 1 eps-figure, improved editionHigh Energy Physics - Phenomenologytext