2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/118270The Configuration Interaction method is used to demonstrate that there is an electronically stable state of positronic calcium with an orbital angular momentum of L=1. This prediction relies on the use of an asymptotic series to estimate the variational limit of the energy. The best estimate of the binding energy is 37 meV. A discussion of the structure of the system is also presented.4 pages, 2 figures, in press PRLAtomic PhysicsChemical Physicstext