2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176695We consider Big Bang Nucleosynthesis(BBN) with long lived charged massive particles. Before decaying, the long lived massive particles recombines with a light element to form a bound state like a hydrogen atom. We discuss the possible change of primordial light element abundances due to formations of such bound states.4 pages,1 figure,typos corrected and references addedHigh Energy Physics - Phenomenologytext