Neutron-proton elastic scattering at 325 MeV

Abstract Accurate measurements of the P and D T parameters in np elastic scattering at 325 MeV resolve a major ambiguity in the phase shift analysis. The mixing parameters e 1 = 8.4 ± 0.6° and e 3 = 7.2 ± 0.4° are particularly well determined, and in good agreement with theoretical expectations.