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arXiv · hep-ph/9609496

Cabibbo Mixing and the Search for CP Violation

P. H. Frampton·S. L. Glashow
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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 $3 \times 3$ 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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P. H. Frampton, S. L. Glashow. 1996-09-26. Cabibbo Mixing and the Search for CP Violation. https://doi.org/10.1103/physrevd.55.1691

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