2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45193The heavy to light form factors in $B$ decays are discussed. Critical discussion of theoretical approaches is made with special emphasis on their failure to describe the $B \to K^{(\ast )}ψ$ data.8 pages LPTHE Orsay-94/53, Talk at Beauty 94 Workshop, april 94, Mont St Michel, FranceHigh Energy Physics - Phenomenologytext