We determine the ability of future experiments to observe supersymmetric
contributions to the rare decays BβXsβΞ³ and BβXsβl+lβ. A
global fit to the Wilson coefficients which contribute to these decays is
performed from Monte Carlo generated data. This fit is then compared to
supersymmetric predictions for several different patterns of the superpartner
spectrum.Comment: Talk given at the 28th International Conference on High Energy
Physics, Warsaw, Poland, July 199