We analyze the decays of charginos, neutralinos, gluinos and the first/second
generation squarks in the Minimal Supersymmetric extension of the Standard
Model, focusing on the three-body decays in scenarios where the ratio tanβ of vacuum expectation values of the two Higgs doublet fields is large.
We show that the three-body decays of the next-to-lightest neutralinos
(lightest charginos) into bbˉ,τ+τ− (τν) final states,
where third generation sfermion and Higgs boson exchange diagrams play an
important role, are dominant. Furthermore, we show that decays of gluinos into
bbˉ final states and squark decays into lighter sbottoms through gluino
exchange can also have sizeable branching fractions, especially in scenarios
where the soft SUSY breaking gaugino mass parameters are not unified at the GUT
scale.Comment: 10 pages with 5 figures + axodraw.sty, late