Spontaneous Breaking of CP in SU(5), Natural Flavor Conservation and the Baryon Asymmetry

摘要

An SU(5) model is presented in which CP is spontaneously broken at the grand unification mass scale and that preserves all the features of the Weinberg model of CP-nonconservation with natural flavor conservation. Therefore, in contrast to a model recently proposed by Branco, in the present model a net cosmological baryon asymmetry can be generated through the decays of superheavy lliggs. The implications for CP-nonconserving effects in proton decay are also discussed. (ERA citation 06:032652)