2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46351An explicit model is presented which gives the momentum transfer-dependent ratios of form factors of hadronic currents. For the unknown Isgur-Wise function and its generalization for transitions to light particles a simple phenomenological Ansatz is added. The model allows a calculation of all form factors in terms of mass parameters only. It is tested by comparison with experimental data, QCD sum rules and lattice calculations.LaTeX, 16 pages, incl. 7 figs. and 4 tablesHigh Energy Physics - Phenomenologytext