Abstract
A model for high-energy $\ensuremath{\pi}p$ scattering is presented. Partial waves with $l\ensuremath{\le}{l}_{a}$ are taken as completely imaginary and those with ${l}_{c}\ensuremath{\ge}l>{l}_{a}$ are given by their Born terms. Values of the partial-wave inelasticity $\ensuremath{\eta}_{l\ifmmode\pm\else\textpm\fi{}}^{}{}_{}{}^{T}$ are calculated dynamically. A force similar to the exchange of a scalar particle of mass $<2\ensuremath{\mu}$ but with residue of opposite sign is found. This force gives a repulsive real part of the forward scattering amplitude. The origin of this force is explained as due to the exchange of the $\ensuremath{\pi}\ensuremath{-}\ensuremath{\pi}$ $J=0$, $T=0$ antibound state or ABC particle.
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