2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82598The low-energy parameters describing the np scattering in the 3S1 + 3D1 partial waves, the deuteron parameters, and their relations are discussed. These parameters can be determined quite accurately in the energy-dependent Nijmegen partial-wave analyses of the np data and are also given by the high-quality Nijmegen potentials. The newest values for these parameters are presented.10 pages LaTeXNuclear Theorytext