Elsevier

Nuclear Physics B

Volume 33, Issue 1, 1 October 1971, Pages 29-41
Nuclear Physics B

Further evidence for the decay mode X0γγ and determination of the branching ratio X0 → γγX0total

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Abstract

41 ± 8 events of the type X0γγ have been observed in a study of the reaction πp → n(X0γγ) at 1.6 GeV/c incident π-momentum. This provides further evidence to our previous observation of this new X0 decay mode and allows the determination of the branching ratio Γ(X0→γγ)Γ(X0total=(1.7 ± 0.4)%. The theoretical implications of this result are discussed.

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