Scattering Amplitude of πN on the Second Sheet
arXiv:1302.3891
Abstract
We propose parameterization procedures of the scattering amplitude f_{1+}^{3}(s)) with a view to extracting the pole parameters from data in the elastic region of πN scattering. This is achieved by considering the analyticity properties of partial wave amplitudes directly and writing dispersion relations for the amplitude explicitly.
2 Figures, 1 Table