2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47898The prospects for a precise and model independent determination of $|V_{ub}|$ from inclusive and exclusive semileptonic B decays are reviewed.Talk presented at the XXXIIIrd Rencontres de Moriond: Electroweak Interactions and Unified Theories, Les Arcs, France, March 14-21 1998High Energy Physics - Phenomenologytext