Momentum correlation in the three-body decay of high-density K¯ nuclear clusters: NNNK¯→N+N+Λ

A method is proposed to probe the size of dense K¯ nuclear clusters by observing the momentum correlation in their 3-body decay products, such as [pppK−](T=1)→Λ+p+p and [ppnK−](T=0)→Λ+p+n. The calculated momentum correlation pattern expressed in a Dalitz plane shows characteristic features, reflecting the size/density and the angular momentum of the parent K¯ cluster.