2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226576I discuss the results of a recent quenched lattice calculation of the two independent form factors parametrizing the semileptonic decays between heavy-light pseudoscalar mesons. The differential decay rate of the process B --> D l nu has been calculated at non vanishing momentum transfer both in the case of the light leptons, l=e,mu, and in the case of a non vanishing lepton mass, l=tau.Talk presented at Lattice2007, Regensburg, July 30 - August 4, 2007; 7 pages, 3 figuresHigh Energy Physics - Latticetext