Cabibbo Mixing and the Search for CP Violation
P. H. Frampton, S. L. Glashow
Abstract
We examine certain extensions of the standard model in which CP violation is spontaneous and the strong CP problem is resolved. In these models, the 3 × 3 quark mixing matrix is neither real nor unitary. However, to a precision of 0.1%, it is real and orthogonal. There are no readily observable CP-violating effects besides those in the neutral kaon system.
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