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VOLUME 29 (1979) | ISSUE 10 | PAGE 652
The ππ-scattering phases from the analysis of the reaction π-p→ π-π+n near the threshold
The phases of the s0 — and — wave π π scattering near the threshold, which were obtained from an analysis of the reaction π ~p —*π ~π + ηίη the energy range 200 MeV < Τπ < 260 MeV by using the Chu-Low method in the pseudoperipheral approximation, are given. The experimental data for the δ°0 phase confirm the theoretical prediction of the presence of the subthreshold zero in the s wave ππ scattering amplitude.