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arXiv · hep-ph/9801411

Approximate CP in Supersymmetric Models

Galit Eyal·Yosef Nir
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Abstract

We construct phenomenologically viable supersymmetric models where CP is an approximate symmetry. The full high energy theory has exact CP and horizontal symmetries that are spontaneously broken with a naturally induced hierarchy of scales, $Λ_{CP}\llΛ_H$. Consequently, the effective low energy theory, that is the supersymmetric Standard Model, has CP broken explicitly but by a small parameter. The $ε_K$ parameter is accounted for by supersymmetric contributions. The predictions for other CP violating observables are very different from the Standard Model. In particular, CP violating effects in neutral B decays into final CP eigenstates such as $B\raψK_S$ and in $K\raπν\barν$ decays are very small.

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Galit Eyal, Yosef Nir. 1998-01-26. Approximate CP in Supersymmetric Models. https://doi.org/10.1016/s0550-3213(98)00502-1

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