2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/191847We present a new truncation scheme for the Schwinger-Dyson equations of QCD that respects gauge invariance at any level of the dressed loop expansion. When applied to the gluon self-energy, it allows for its non-perturbative treatment without compromising the transversality of the solution, even when entire sets of diagrams (most notably the ghost loops) are omitted, or treated perturbatively.9 pages, 2 figuresHigh Energy Physics - Phenomenologytext