Abstract

Preliminary results of hyperon productions from two-photon collisions at Belle are presented. From 89 fb −1 . data, 243 γγ → Λ Λ pairs are observed and its energy and angular distributions are presented. From Λ Λ events, 87 ∑° or ∑° are observed as ∑° → Λγ . γγ → Ξ° Ξ° , Ξ ° → Λπ °, are serached as background check. None of it is found and an upper limit is set. For the first time process γγ → Λ P K + and its charged conjugate is observed.

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