2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42517The rare decay B^+ \to D_s^+ \bar K^{*0} can occur only via annihilation diagrams in the Standard Model. We calculate the branching ratio in perturbative QCD approach based on k_T factorization theorem. We found that the branching ratio of this decay is about of order 10^{-8}, which may be sensitive to new physics.9 pages, 2 figures, latexHigh Energy Physics - Phenomenologytext