Light Meson Physics from Charm Decays at Fermilab E791

Details Light Meson Physics from Charm Decays at Fermilab E791 Light Meson Physics from Charm Decays at Fermilab E791

2001-10-23

arxiv.org/abs/hep-ex/0110052v1

AIPConf.Proc.619:63-72,2002

Physics

High Energy Physics

High Energy Physics - Experiment

10 Pages. Plenary talk given at HADRON 2001, Protvino, Russia, August 2001. To appear in the Proceedings

Scientific paper

10.1063/1.1482436

We present recent results on light mesons based on Dalitz plot analyses of charm decays from Fermilab experiment E791. Scalar mesons are found to have large contributions to the decays studied, $D^+\to K^-\pi^+\pi^+$ and $D^+, D_s^+\to\pi^-\pi^+\pi^+$. From the $K\pi\pi$ final state, we find good evidence for the existence of the light and broad $\kappa$ meson and we measure its mass and width. We also discuss recently published results on the 3$\pi$ final states, especially the measurement of the $f_0$ parameters and the evidence for the $\sigma$ meson from $D^+\to\sigma\pi^+$. These results demonstrate the importance of charm decays as a new environment for the study of light meson physics.

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