Decoupling Solution to the Supersymmetric Flavor Problem without Color Instability

Details Decoupling Solution to the Supersymmetric Flavor Problem without Color Instability Decoupling Solution to the Supersymmetric Flavor Problem without Color Instability

1999-09-08

arxiv.org/abs/hep-ph/9909281v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, Latex, Talk given at International Symposium on Supersymmetry, Supergravity, and Superstring (SSS99), Seoul, Korea,

Scientific paper

The supersymmetric flavor problem is elegantly solved by the decoupling scenario, where the first-two generation sfermions are much heavier than the third generation ones. However, such a mass spectrum is not stable against renormalization group evolution and causes extreme fine-tuning of the electroweak symmetry breaking. We present a mechanism which stabilizes the mass spectrum with such a large splitting, by introducing extra vector-like chiral multiplets of masses comparable to the first-two generation sfermions. The explicit models are constructed in a framework of the anomalous U(1) SUSY-breaking model.

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