Λ＊ = Λ(1405) plays an essential role in the formation of kaonic nuclear clusters (KNC). The simplest KNC, K－pp, has the structure Λ＊p = (K－p)I=0p, in which a real kaon migrates between two nucleons, mediating super-strong Λ＊p attraction. Production data of K－pp ... ...

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