2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211615The decay constants and the radiative decay widths of η_b(nS) and η_c(nS) are computed within a semirelativistic quark model, using a potential found through the AdS/QCD correspondence. For η_c, the results are in agreement with experimental data, while in the case of η'_c a discrepancy is found and the possible reasons are discussed.La TeX, 6 pages, 2 figures, minor corrections; published versionHigh Energy Physics - Phenomenologytext