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arXiv · hep-ph/9902401

Constraints from Charge and Colour Breaking Minima in the (M+1)SSM

U. Ellwanger·C. Hugonie
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Abstract

We study the constraints on the parameter space of the supersymmetric standard model extended by a gauge singlet, which arise from the absence of global minima of the effective potential with slepton or squark vevs. Particular attention is paid to the so-called ``UFB'' directions in field space, which are F-flat in the MSSM. Although these directions are no longer F-flat in the (M+1)SSM, we show that the corresponding MSSM-like constraints on m_0/M_{1/2} apply also to the (M+1)SSM. The net effect of all constraints on the parameter space are more dramatic than in the MSSM. We discuss the phenomenological implications of these constraints.

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U. Ellwanger, C. Hugonie. 1999-02-19. Constraints from Charge and Colour Breaking Minima in the (M+1)SSM. https://doi.org/10.1016/s0370-2693(99)00546-8

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