CP Violation and New Physics

Abstract

We describe some of the extensions of the SM, including models with spontaneous CP violation, where New Physics relevant for CP violation may arise. It is emphasized that the SM predicts a series of exact relations among various measurable quantities, such as moduli of CKM matrix elements and rephasing invariant phases. These exact relations provide a stringent test of the SM, with the potential to reveal New Physics.Comment: Invited talk at Workshop on the CKM Unitarity Triangle, IPPP Durham, April 2003. 8 pages, 1 figur