2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/203486We calculate pion-pion scattering lengths and sigma, rho and a1 decay widths from a gauged linear sigma model with two flavours and its globally invariant generalisation.Presented at the workshop SCADRON 70 "Scalar Mesons and Related Topics" February 11-16, 2008, at IST in Lisbon, Portugal. 5 pages, 1 figureHigh Energy Physics - PhenomenologyNuclear Theorytext