Search For Lambda(B)-]-J/Psi-Lambda(0) In P(P)Over-Bar Collisions At Root-S = 1.8 Tev

We have searched for the b-flavored baryon decay LAMBDA(b) --> J/psi LAMBDA0 in ppBAR collisions at square-root s = 1.8 TeV with the Collider Detector at Fermilab (CDF). In the J/psi LAMBDA0 invariant-mass distribution we observe a flat distribution and a small number of events, consistent with no signal. Using the b-quark cross section measured by the CDF we put an upper limit on the b --> LAMBDA(b) production fraction times the branching ratio F(LAMBDA(b))B(LAMBDA(b) --> J/psi LAMBDA0) of 0.50 X 10(-3) at 90% confidence level.