2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39308We show that therecently observed pion invariant mass distribution of the phi ->pi0 pi0 gamma decay can be satisfactorily described by the chiral U(3) X U(3) Linear Sigma Model.5 Pags. 2 Figs. Contribution to DAFNE99, Frascati Italy Nov (99)High Energy Physics - Phenomenologytext