The polarization parameter $P_{n000\mathrm{}}$, the two-spin parameters $D_{n0n0\mathrm{}}$, $K_{n00n}$, $D_{s^{\prime }0s0}$, $D_{s^{\prime }0k0}$ and the three-spin parameters $M_{s^{\prime }0sn}$ and $M_{s^{\prime }0kn}$ have been measured for $\mathrm{pp}$ elastic scattering angles between 60° and 88° center of mass at 241 and 314 MeV incident kinetic energies, and between 38° c.m. and 98° c.m. at 341, 366, and 398 MeV. At 473 MeV, only $P_{n000\mathrm{}}$ and $D_{s^{\prime }0k0}$ were measured between 34° c.m. and 62° c.m. The experiment was performed at SIN using a polarized proton beam and a polarized butanol target. The polarization of the scattered proton was analyzed in a carbon polarimeter. The influence of these high-precision data on the Saclay-Geneva phase-shift analysis is discussed.

• Received 16 November 1988

DOI:https://doi.org/10.1103/PhysRevD.40.35