2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40376The exact democratic structure for the quark mass matrix, resulting from the action of the family symmetry group $A_{3L}\times A_{3R}$, is broken by the vaccum expectation values of heavy singlet fields appearing in non renormalizable dimension 6 operators. Within this specific context of breaking of the family symmetry we formulate a very simple ansatz which leads to correct quark masses and mixings.6 pages, RevTeXHigh Energy Physics - Phenomenologytext