2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46510I propose a new mechanism for baryogenesis, in which the out-of-equilibrium condition is not neccessary. When the electroweak symmetry is broken spontaneously, left-handed neutrinos may get Majorana masses containing $CP-$violating phases. This induces a lepton asymmetry spontaneously, which is then converted to a baryon asymmetry in the presence of the sphaleron field.8 pages (including 1 eps file)High Energy Physics - Phenomenologytext