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We present the final results from Experiment 864 of a search for charged andneutral strange quark matter produced in interactions of 11.5 GeV/c per nucleonAu beams with Pt or Pb targets. Searches were made for strange quark matterwith A>4. Approximately 30 billion 10% most central collisions were sampled andno strangelet states with A<100 were observed. We find 90% confidence levelupper limits of approximately 10^{-8} per central collision for both chargedand neutral strangelets. These limits are for strangelets with proper lifetimesgreater than 50 ns. Also limits for H^{0}-d and pineut production are given.The above limits are compared with the predictions of various models. Theyields of light nuclei from coalescence are measured and a penalty factor forthe addition of one nucleon to the coalescing nucleus is determined. This isuseful in gauging the significance of our upper limits and also in planningfuture searches for strange quark matter.Comment: 35 pages, 18 figures, submitted to Phys. Rev.

Search for strange quark matter produced in relativistic heavy ion collisions