2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47867We study the limits on the mass of the lightest Higgs in supersymmetric models extended with a gauge singlet when perturbative unification is required. We find that when maximum intermediate matter is added, the different evolution of the gauge couplings raises the mass bound from 135 GeV to 155 GeV. In these models perturbative unification of the gauge couplings is achieved in a natural way.5 pages, 3 figures, Talk presented at the XXXIIIrd Rencontres de Moriond, Electroweak and Unified TheoriesHigh Energy Physics - Phenomenologytext