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arXiv · hep-ph/9603233

Solving the Supersymmetric CP Problem with Abelian Horizontal Symmetries

Yosef Nir·Riccardo Rattazzi
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Abstract

Models that combine Abelian horizontal symmetries and spontaneous CP violation can (i) explain the smallness and hierarchy in quark parameters; (ii) satisfactorily suppress supersymmetric contributions to flavor changing neutral current processes; (iii) solve the $μ$-problem; and (iv) suppress supersymmetric contributions to CP violating observables to an acceptable level. The CKM phase is $Ø(1)$ and responsible, through Standard Model box diagrams, to $ε_K$. The supersymmetric CP violating phases are suppressed, $ϕ_A\simλ^6$ and $ϕ_B\simλ^{8}$ ($λ\sim0.2$), leading to an electric dipole moment of the neutron that is about 2--3 orders of magnitude below the experimental bound.

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Yosef Nir, Riccardo Rattazzi. 1996-03-05. Solving the Supersymmetric CP Problem with Abelian Horizontal Symmetries. https://doi.org/10.1016/0370-2693(96)00571-0

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