Proton Polarization in Inclusive Processes at 100-400 GeV

The results of an experiment conducted at Fermilab to measure the polarization of the final-state proton in the reaction $p+p\to p_{\uparrow }+X$ and $p+\mathrm{C}\to p_{\uparrow }+X$ are presented. Measurements were made at beam energies of 100, 200, 300, and 400 GeV for $P_T$ from 0.5 to 1.5 GeV/c and $x_{\mathrm{F}}$ between - 0.7 and - 0.9.