Formation of ΛΛ hypernuclei by Ξ- capture in light nuclei

We discuss the production of doubly strange ΛΛ hypernuclei in Ξ- atomic capture. The two-body Ξ-+6Li→ΛΛ6He+n reaction is a relatively favorable case, with a yield of order 3%. For heavier p-shell targets, such as 14N, the (1sΛ)2 ground-state yields in the Ξ-+AZ→ΛΛA(Z-1)+n reaction are suppressed, and states of (1sΛ1pΛ) structure, coupled to an excited nuclear core, are preferentially populated