FORMATION AND TRANSITION OF STRANGENESS-EQUALS--2 NUCLEAR SYSTEMS

A scenario is given for the formation of Xi(-) states and the transiti ons to states with double-Lambda. First, the production cross sections of Xi hypernuclear states by (K-, K+) reactions on typical two target s (C-12 and O-16) are calculated within the framework of the distorted -wave impulse approximation. Next, the transition rates from Xi(-) hpp ernuclear states to possible double-Lambda states are evaluated, which are closely related to single- and double-(Lambda emission after Xi(- ) p--> Lambda Lambda conversion in nuclei. The partial conversion widt hs for the atomic Xi(-) absorption by C-12 and O-16 are also estimated in the similar way, discussing various possible final states. In orde r to extract an information on the Xi-N interaction, the cross section s and Xi state widths are given as a function of the Woods-Saxon well depth for the Xi particle. The result is discussed in anticipation of observations in future experiments.