Solving the Supersymmetric CP Problem with Abelian Horizontal Symmetries

Details Solving the Supersymmetric CP Problem with Abelian Horizontal Symmetries Solving the Supersymmetric CP Problem with Abelian Horizontal Symmetries

1996-03-05

arxiv.org/abs/hep-ph/9603233v1

Phys.Lett. B382 (1996) 363-368

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, harvmac, no figures

Scientific paper

10.1016/0370-2693(96)00571-0

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 $\mu$-problem; and (iv) suppress supersymmetric contributions to CP violating observables to an acceptable level. The CKM phase is $\O(1)$ and responsible, through Standard Model box diagrams, to $\epsilon_K$. The supersymmetric CP violating phases are suppressed, $\phi_A\sim\lambda^6$ and $\phi_B\sim\lambda^{8}$ ($\lambda\sim0.2$), 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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