πNPolarization and Regge Poles

We show that the recent high-energy ${\pi }^{-}p$ polarization data from CERN are explained in a natural way by the three-Regge-pole model. The prediction of this model for ${\pi }^{+}p$ polarization differs greatly from that for ${\pi }^{-}p$ polarization in the region where $\mathrm{}\left|t\right|<0.6\mathrm{}{\left(\frac{\mathrm{GeV}}{c}\right)}^2$. In particular, in this region, the ${\pi }^{+}p$ polarization has an opposite sign and comparable magnitude to that for ${\pi }^{-}p$.