PREDICTIONS OF A NEW INTERFERENCE MODEL FOR NEAR-FORWARD PION-NUCLEON SCATTERING

Using parameters determined by outside means, we discuss the predictions for small-angle pion-nucleon scattering below 2 GeV/c of the interference model that equates the background to the Pomeranchon exchange amplitude. The quantitative predictions for elastic scattering are rather poor, but the moderate success of the direct-channel resonances alone in predicting the charge-exchange process leads to a suggestion for the determination of resonance parameters in phase-shift analysis, and to a reinterpretation of the model which has several interesting features. © 1969 The American Physical Society.