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 can be the only source of all CP violation. We show that in supersymmetric models with new flavour structure beyond the Yukawa matrices, the CKM phase 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 $B \to ϕK_S$.

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