Structure of amplitudes ofKNcharge-exchange reactions

On the basis of recent data on $K^{-}p\to {\overline{K}}^{0}n$ polarization and on differential cross sections, we present an amplitude analysis for $K^{-}p\to {\overline{K}}^{0}n$ and $K^{+}n\to K^{0}p$. The approach makes use of fixed-$t$ dispersion relations and of information in the low-energy (resonance) region. We present detailed comparison of our results with those of amplitude analyses of other reactions, and we underline a number of features of the vector and tensor exchange in common to several two-body hadron processes. A check of our results against finite-energy sum rules is also presented.