Simultaneous measurement of the spin parametersPandCNNinppelastic scattering at 2, 3, 4, and 6 Gev/c

Using the polarized-beam facility at Argonne National Laboratory and a polarized proton target, simultaneous measurements of the spin parameter $P$ and the spin correlation term $C_{\mathrm{NN}}$ were made. Data were obtained and analyzed at beam momenta of 2, 3, 4, and 6 GeV/c in the momentum-transfer-squared interval $0.1\le \mathrm{}\left|t\right|\mathrm{}\le 2.8$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^2$. A preliminary phase-shift analysis of the 2- and 3-GeV/c data is discussed and a comparison with predictions of a particular Regge-pole model at all four energies is made.