Measurement of polarization transfer in p-p scattering for a test of nucleon-nucleon potentials

Abstract We have measured polarization transfer observables K y ′ y ( θ ), K x ′ x ( θ ) and K x ′ z ( θ ) for proton-proton scattering at 25.68 MeV with an accuracy of 0.007–0.012. Phase shift analyses of these data together with differential cross section and analyzing power data at the same energy yield an essentially model independent determination of the 1 S 0 , 3 P J and e 2 parameters at this energy. These parameters provide a test of nucleon-nucleon potential models and favour Paris and Nijmegen potentials.