New Measurements of Polarization and Differential Cross Sections inK+pElastic Scattering in the 1.7-3-GeV/cRange

We have measured the polarization parameter and differential cross sections in $K^{+}p$ elastic scattering from a polarized target from small $\mathrm{}\left|t\right|\mathrm{}$ and small $\mathrm{}\left|u\right|\mathrm{}$ at five momentum points: 1.7, 2.1, 2.4, 2.7, and 3.0 GeV/c. The polarized-proton target was butanol cooled at 0.5° by a ${}_{}{}^3{}_{}{}^{}\mathrm{He}$-${}_{}{}^4{}_{}{}^{}\mathrm{He}$ refrigerator; a combination of multiwire proportional chambers and scintillation counters detected the scattered particles. The results for small $\mathrm{}\left|u\right|\mathrm{}$ are discussed in the context of pure Regge-pole models with exchange-degenerate $\Lambda$ trajectories.