The study of the proton-proton collisions at the beam momentum 1628 MeV/c
2011
The new data on the elastic pp and single-pion production reaction pp → pnπ + taken at the incident proton momentum 1581 MeV/c are presented. 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 pp → ppπ + data measured earlier and the pp → pnπ + data taken at 1628 MeV/c. The analysis shows that at 1581 MeV/c the largest contributions stem from the 3 P 2, 3 P 1, 3 P 0 and 3 F 2 initial partial waves. From these partial waves we also deduce contributions for the production of the Δ(1232) and N(1440) states.
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