2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/193272We extend the use of derivative dispersion relations to the study of slopes of the real and imaginary amplitudes in pp and p-pbar elastic scattering. The new relations are tested against the solutions for the amplitudes obtained in the analysis of the high energy data. Extensions beyond the forward direction are investigated.5 pages and 2 figuresHigh Energy Physics - Phenomenologytext