Strong CP and Low-energy Supersymmetry

Details Strong CP and Low-energy Supersymmetry Strong CP and Low-energy Supersymmetry

1996-12-23

arxiv.org/abs/hep-ph/9612452v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Title changed. Discussions added. Version to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(97)00245-1

A spontaneously-broken CP provides an alternative to the KM mechanism for CP violation with the advantage that the strong CP problem is solved. We consider, for such a model with a new gauged U(1), the incorporation of low-energy supersymmetry and find the constraints on alignment and squark degeneracy. The conclusion is that although the $\bar{\theta}$ constraints are much less severe than in other generic schemes with supersymmetry breaking and spontaneous CP violation, one restriction remains stronger than needed in the MSSM for suppression of FCNC.

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