  We have searched for the production and decay of light super-symmetric
baryons produced in 800 GeV/c proton copper interactions in a charged hyperon
beam experiment. We observe no evidence for the decays R+(uud \g^~) -> S(uds
\g^~) pi+ and X-(ssd \g^~) -> S(uds \g^~) pi- in the predicted parent mass and
lifetime ranges of 1700-2500 Mev/c2 and 50-500 ps. Production upper limits for
R+ at xF=0.47, Pt=1.4 GeV/c2 and X- at xF=0.48, Pt=0.65 GeV/c2 of less than
10^-3 of all charged secondary particles produced are obtained for all but the
highest masses and shortest lifetimes predicted.
