Elastic Meson-Nucleon and Nucleon-Nucleon Scattering: Models vs. All Available Data

Abstract

We consider simple-pole descriptions of soft elastic scattering at small $t$ and $s$, and allow for the presence of a hard pomeron. We have built and analyzed an exhaustive dataset and we show that simple poles provide an excellent description of the data in the region $-0.5$ GeV${}^2<t<$ $-0.1$ GeV${}^2$, 6 GeV$<\sqrt{s}<$63 GeV. We show that new form factors have to be used, and get information on the trajectories of the soft and hard pomerons.

Contribution to the proceedings of the XIth International Conference on Elastic and Diffractive Scattering, Chateau de Blois, France, May 15 - 20, 2005. Needs Blois.sty (provided)