Abstract

Experiment AGS-E906, demonstrating the production of double-Λ hypernuclei in (K−,K+) reactions on 9Be, was carried out at the D6 beamline. The technique was the observation of pions produced in sequential mesonic weak decay. The results indicate production of a significant number of ΛΛ4H and the twin hypernuclei Λ4H and Λ3H. An implication of this experiment is that the existence of an S=−2 dibaryon more than a few MeV below the ΛΛ mass is unlikely.

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