2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185306A current algebra sum rule for inclusive decays \bar B --> D + X + \ell + \bar νby Bjorken et al. is used to obtain constraints on the Isgur-Wise function ξ(ω) for \bar B --> D \ell \bar νdecays.4+1 pages, Latex2e + PSHigh Energy Physics - PhenomenologyConstraint on the Isgur-Wise function for \bar B --> D semileptonic decaystext