2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42374In this note we present additional arguments in favour of Kaluza and Klein picture of the world. In fact, we show that formula (\ref{KK3pi}) provided by Kaluza-Klein approach with the fundamental scale early calculated \cite{1} gives an excellent description for the mass spectrum of three-pion system.LaTex2e, 5 pagesHigh Energy Physics - PhenomenologyHigh Energy Physics - ExperimentNuclear Experimenttext