2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48761Singlet extensions of the Standard Model (SM) allow for a strongly first order electroweak phase transition, because of trilinear terms in the tree-level potential. We present a systematic procedure to study the parameter space of the Next-to-Minimal Supersymmetric SM (NMSSM). We find that this model is consistent with electroweak baryogenesis for a wide range of parameters, allowing Higgs masses up to at least 115 GeV.5 pages, 4 figures. Presented at Strong and Electroweak Matter '98, Copenhagen, Denmark, Dec. 2-5, 1998High Energy Physics - Phenomenologytext