2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36878We present results from Fermilab experiment E791. We extracted the fractions of resonant components in the $Λ_c^+\to p K^- π^+$ decays, and found a significant polarization of the $Λ_c^+$ using a fully 5-dimensional resonant analysis. We also did resonant analyses of $D^+$ and $D^+_s$ decays into $π^+π^-π^+$. We observed an insignificant asymmetry in the Breit Wigner describing the $f_0(980)$ and found good evidence for a light and broad scalar resonance in the $D^+$ decays.3 pages, 2 figuresHigh Energy Physics - Experimenttext