2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41525We evaluate the time delay in some of the established resonance regions of $πN$ elastic scattering. In addition to the positive peaks corresponding to resonances, we identify broad regions of negative time delay or time advancement which restrict the energy ranges within which the resonances can be located.10 pages, LaTex, including 4 figuresHigh Energy Physics - PhenomenologyHigh Energy Physics - ExperimentNuclear Theorytext