2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34768Gravitation lensing calculations, which are generally done for light ray, are extended to that for a massive particle. Many interesting results were observed. We discuss the scattering cross section along-with many consequential quantities here. In particular, the case of Schrwarzschild metric was taken as illustration, though the analysis applies to a wide range of cases, such as extended black holes.8 pages, 4 figures, written in LatexGeneral Relativity and Quantum Cosmologytext