2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/103423We present a systematic study of the shape function for inclusive B-meson decays in the heavy-quark limit, which is based on the QCD equations of motion and heavy-quark symmetry, and takes into account the cusp divergence due to radiative corrections.4 pages, contribution to proceedings of International Conference on QCD and Hadronic Physics, Beijing, June 16-20, 2005High Energy Physics - Phenomenologytext