Regge-Pole Model for Invariant Functions. III. Photoproduction for Unpolarized and Linearly Polarized Photons

Abstract

It was shown in Paper II that the three Regge-type poles $\pi$, $B$, and $C$ reproduce the $\mathrm{pn}\to \mathrm{np}$ and $p\overline{p}\to n\overline{n}$ data. The same trajectories are used in this paper to give a description of the ${\pi }^{\pm }$ photoproduction near the forward direction ($t\approx 0$). For larger values of $\mathrm{}\left|t\right|\mathrm{}$, however, inclusion of the $\rho$ and $R$ trajectories become necessary.