Abstract
A search for the process e + e −→φ(1020)→η″(958) γ in the decay channel η″→π + π − η, η→γγ was made in an experiment at the VEPP-2M e + e − collider with the SND detector. Analysis confirms the occurrence of φ→η″γ decay with probability B(φ→η″ γ)=(6.7 +3.4−2.9 )×10−5.
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Pis’ma Zh. Éksp. Teor. Fiz. 69, No. 2, 87–91 (25 January 1999)