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Supersymmetry; electroweak symmetry breaking; horizontal symmetries; D-term supersymmetry breaking

We discuss the clash between the absence of fine tuning in the Higgs potential and a sufficient suppression of flavour changing neutral current transitions in supersymmetric extensions of the standard model. It is pointed out that horizontalU(1) symmetry combined with theD-term supersymmetry breaking provides a realistic framework for solving both problems.

Stefan Pokorski¹

1. Institute of Theoretical Physics, Warsaw University, Hoza 69, Warsaw - 00-681, Poland

Published

February 2004