Light meson and baryon spectroscopy from charm decays in Fermilab E791

Abstract

We present results from Fermilab experiment E791. We extracted the fractions of resonant components in the ${\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+}$ decays, and found a significant polarization of the ${\Lambda }_c^{+}$ using a fully 5-dimensional resonant analysis. We also did resonant analyses of $D^{+}$ and $D_s^{+}$ decays into ${\pi }^{+}{\pi }^{-}{\pi }^{+}$. 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 figures