Spontaneous CP violation

Abstract

We study four different models for CP violation: the standard (KM) model, the aspon model of spontaneous breaking and two models of soft breaking.In all except the standard model, the strong CP problem is addressed and solved. Testable predictions for the area of the unitarity triangle and for (ǫ ′ /ǫ) K are emphasized. The issue of CP violation may well become the first place where the standard model of particle theory is shown definitively to be deficient. There are two reasons for expecting this to happen: (1) the strong CP problem is still not understood in the unadorned standard model and (2) the KM mechanism, although unquestionably present, may not provide the full explanation of ǫ K and (ǫ ′ /ǫ) K .

Cp and B Physics: Progress and Prospects

“…there does exist a basis where all CKM parameters are real. This is what is implied by the superweak theory and also by the aspon model, presented here by Paul Frampton 5 . The data as presented at this meeting by Roger Forty 6 is only marginally consistent with this hypothesis, but it was emphasized by many that the systematic errors are dominated by theoretical uncertainty and cannot be treated reliably by standard statistical methods.…”