2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185163The factorization of hard and soft contributions into the hadronic decays of B_c meson at large recoils is explored in order to evaluate the decay rates into the S, P and D-wave charmonia associated with rho and pi. The constraints of approach applicability and uncertainties of numerical estimates are discussed. The mode with the J/psi in the final state is evaluated taking into account the cascade radiative electromagnetic decays of excited P-wave states, that enlarges the branching ratio by 20-25%.13 pages, LaTeX axodraw-style, 1 figure, 2 tablesHigh Energy Physics - Phenomenologytext