Polarization inp−pElastic Scattering at High Energies

Results are presented from an experiment conducted at Fermilab to measure the polarization parameter in $p-p$ elastic scattering at momenta between 20 and 200 GeV/c at $\mathrm{}\left|t\right|\mathrm{}$ values between 0.3 and 1.0 GeV/${\mathit{c})}^2$. Recoil protons from the interaction of the circulating Fermilab beam and a hydrogen gas jet were spin analyzed in a carbon polarimeter and significant polarizations were observed. The results are compared with the predictions of exchange models.