Can the CKM phase be the only source of CP violation?

We address the question of whether the CP-violating phase in the CKM mixing matrix (δCKM) can be the only source of all CP violation. We show that in supersymmetric models with new flavour structure beyond the Yukawa matrices, δCKM can generate the required baryon asymmetry and also accounts for all observed results in K and B systems, in particular ε′/ε and the CP asymmetry of B → φ K S. © 2003 Elsevier B.V. All rights reserved.