2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/190506In this work we investigate the possibility to completely rotate away proton decay. We show that by choosing specific mass matrices for fermions it is possible to accomplish this in flipped SU(5).6 pages, RevTeX4, minor correctionsHigh Energy Physics - PhenomenologyHigh Energy Physics - Experimenttext