Further Evidence for Baryon Exchange fromK+pBackward Elastic Scattering

We have studied $K^{+}p$ elastic scattering near the backward direction at a beam momentum of 3.5 GeV/c. In addition to providing evidence for baryon exchange, the experimental results show a possible turnover of the angular distribution for positive values of $u$ which is interpreted in terms of a Reggeized baryon exchange model. We have made a comparison of $K^{+}p$, ${\pi }^{+}p$, and ${\pi }^{-}p$ backward scattering within the framework of SU(3) which leads to predictions concerning other, as yet unmeasured, $K^{+}N$ processes.