2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197280The experimental limit on the electron electric dipole moment constraints the pattern of supersymmetric grand-unified theories with right-handed neutrinos. We show that such contraints are already competing with the well known ones derived by the limit on proton lifetime.14 pages, 6 eps figures; v2: minor corrections in the textHigh Energy Physics - Phenomenologytext