2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42469The possibility of achieving a gauge coupling grand unification by increasing the QCD degrees of freedom at higher energies is investigated. When confronted with precision low-energy data, the generic weak-mixing angle relation sin^2(theta_W) = N/2(N+1) requires N=7 colors at the GUT scale M_U ~ 10^17 GeV. With the exclusive addition of light Higgs doublets to the standard model particle content, such a unification may also occur if N=5 at M_U ~ 10^16 GeV.4 pages, 2 figuresHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext