Elsevier

Nuclear Physics B

Volume 44, Issue 2, 15 July 1972, Pages 605-617
Nuclear Physics B

Further evidence for the decay mode φηγ and measurement of the branching ratio Γ(φ→ηγ)Γ(φ→total)

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Abstract

The reaction πp → ηφ has been studied at 1.8 GeV/c incident pion momentum using the Bologna-CERN NBC set-up, in order to investigate the electromagnetic decay mode φηγ. We observed (27 ± 6) events, yielding a branching ratio Γ(φ → ηγ)Γ(φ → total) = (7.3 ± 1.9)%. The theoretical implications of this result are discussed.

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