Production of H-3(Lambda) and H-4(Lambda) in central 11.5 GeV/c Au plus Pt heavy ion collisions

We present measurements from BNL AGS Experiment 864 of the H-3(Lambda) yield and of an upper limit on the H-4(Lambda) yield in central 11.5A GeV/c Au+Pt collisions. The measurements span a rapidity range from center of mass, y(c.m.), to y(c.m.)+1 and a transverse momentum range of 0<p(t)less than or equal to1.5 GeV/c. We compare these results with E864 measurements of stable light nuclei and particle unstable nuclei yields of the same baryon number. The implications of these results for the coalescence of strange clusters are discussed.