2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47759I calculate the form factors describing semileptonic and penguin induced decays of B mesons into light pseudoscalar and vector mesons. The form factors are calculated from QCD sum rules on the light-cone including contributions up to twist 4, radiative corrections to the leading twist contribution and SU(3) breaking effects. The theoretical uncertainty is estimated to be $\sim$ (15-20)%.8 pages latex plus one figure; invited talk at Moriond QCD 98High Energy Physics - Phenomenologytext