2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45355Recent progress in the theory of hadrons containing a single heavy quark is reviewed. Particular attention is paid to those aspects that bear on the determination of the magnitudes of the Cabibbo--Kobayashi--Maskawa matrix elements $V_{cb}$ and $V_{ub}$.}19 pagesHigh Energy Physics - Phenomenologytext