The cross section for the reaction 1 H͑␥, 0 ͒ has been measured using tagged photons in the threshold region ͑144.7-169.3 MeV͒. The total cross section, augmented by angular distribution information, is used to deduce the S-wave multipole E 0ϩ . Extrapolation to threshold yields E 0ϩ ϭ(Ϫ1.32Ϯ0.05Ϯ0.06)ϫ10 Ϫ3 /m , in disagreement with earlier estimates. Suppression of E 0ϩ near the ϩ threshold is confirmed, in approximate agreement with recent calculations.PACS number͑s͒: 25.20.Lj, 13.60.Le
The application of rigorous charge conjugation invariance to strange particle interactions has led to the prediction of rather startling properties for the e°-meson state". Some of these are:(
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