2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82401We present microscopic calculations of low energy scattering observables in all possible four nucleon systems : n-3H, p-3He and p-3H. Results were obtained by solving Faddeev-Yakubovski equations in configuration space, appropriately modified to include Coulomb and three-nucleon forces.Nuclear Theorytext