2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45420Experimental data for $b\bar{b}$ quarkonia have been compared with the predictions of a variety of nonrelativistic quark models. It is found that a potential $a\sqrt{r} - b/r +$ const gives good agreement, while many others do not. Some implications of this observation are discussed.6 pages, Latex fileHigh Energy Physics - Phenomenologytext