2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121118We discuss the theoretical status of inclusive radiative decays of charmonium, with a particular emphasis on the QCD description of the photon spectrum, where progress has occurred in recent years. We also comment on the possible extraction of alpha_s (M_J/psi) and on the possibility to gain important information on the nature of J/psi and psi (2S).8 pages, 5 figures, draft prepared for the BESIII Physics Book, comments welcomeHigh Energy Physics - Phenomenologytext