Quasi-Fixed Points and Charge and Colour Breaking in Low Scale Models

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  • 21 September 1999
Abstract
We show that the current LEP2 lower bound upon the MSSM lightest Higgs mass rules out quasi-fixed scenarios for string scales between 10^8 and 10^{14} GeV. We consider the implications for charge and colour breaking (CCB) bounds in the MSSM, and demonstrate that CCB bounds from F and D-flat directions are significantly weakened. For scales less than 10^{10} GeV these bounds become merely that degenerate scalar mass squareds are positive at the string scale.

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