The new data on the elastic pp and single pion production reaction pp → pnπ + taken at the incident proton momentum 1683 MeV/c are presented. The data on the pp → pnπ + reaction are compared with predictions from the OPE model. To extract contributions of the leading partial waves the single pion production data are analyzed in the framework of the event-by-event maximum likelihood method together with the data measured earlier. PACS. 13.75.Cs Nucleon-nucleon interactions-13.85.Lg Total cross sections-25.40.Ep Inelastic proton scattering
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