2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149001The mechanism where flavour symmetry is broken spontaneously is demonstated for a model involving nonets of pseudoscalar and vector mesons. Degenerate bare nonets of vector and pseudoscalar mesons coupling sufficiently strongly to each others lead to unstable self-consistency equations, such that the SU3$_f$ symmetric spectrum breaks down into a stable isospin symmetric mass spectrum similar to the physical spectrum.Major revisions in text, 10 pages, RevTeX, 3 FiguresHigh Energy Physics - Phenomenologytext