Evidence for Light Scalar Resonances in Charm Meson Decays from Fermilab E791

Abstract

From Dalitz-plot analyses of $D^{+}\to {\pi }^{-}{\pi }^{+}{\pi }^{+}$ and $D^{+}\to K^{-}{\pi }^{+}{\pi }^{+}$ decays, we find evidence for light and broad scalar resonances sigma(500) and kappa(800). From a Dalitz-plot analysis of $D_s^{+}\to {\pi }^{-}{\pi }^{+}{\pi }^{+}$ decays, we measure the masses and decay widths of the scalar resonances f_0(980) and f_0(1370).

arXiv commentReferences added. Contribution to 5th International Conference on Quark Confinement and the Hadron Spectrum, Gargnano, Italy, 10-14 Sep 2002