Production of Two Single- Hypernuclei by - Capture

Abstract

The S = -2 hypernuclear states formed through (K-, K+) reactions have been studied by using the 1.66 GeV/c K- beam provided by KEK Proton Synchrotron. Investigation has been done on the stars due to the capture of the Ξ- hyperons at rest in nuclear emulsion, which hyperons were produced in (K-, K+) reactions. We observed a clear case of an absorption of Ξ- hyperon at rest by a nucleus followed by a back-to-back emission of two single-Λ hypernuclei.