Regge analysis and dual absorptive model for γN → πoN, γN → ηN and related processes

Abstract

We present a combined Regge-pole Regge-cut analysis of γN → π o N, γN → ηN and of certain processes related by vector dominance. The magnitude of Regge cuts is constrained to satisfy the requirements of the dual absorptive model. Calculations in terms of the weak cut model are also presented and ways to experimentally distinguish between these two models are discussed. The structure of the real and imaginary parts of the amplitudes is also analyzed.