We propose a scenario that generates the observed baryon asymmetry of the
Universe through a multi--step phase transition in which SU(3) color symmetry
is first broken and then restored. A spontaneous violation of B−L
conservation leads to a contribution to the baryon asymmetry that becomes
negligible in the final phase. The baryon asymmetry is therefore produced
exclusively through the electroweak mechanism in the intermediate phase. We
illustrate this scenario with a simple model that reproduces the observed
baryon asymmetry. We discuss how future electric dipole moment and collider
searches may probe this scenario, though future EDM searches would require an
improved sensitivity of several orders of magnitude.Comment: Updated to comply with referees suggestions and mirror published
versio
