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Resonances and weak interactions in $D^+ \to\pi^+ \pi^- \pi^+$ decays

Abstract : We describe the $\pi\pi$ $S$-wave in $D^+ \to\pi^+ \pi^- \pi^+$ decays using a unitary model for the $\pi\pi$ Final State Interactions (FSI). The three body decay is treated as a quasi two-body process where, at the weak vertex, the D meson decays into a resonance and a pion. The weak part of the decay amplitude is evaluated using the effective weak Hamiltonian within the factorization approximation.
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Journal articles
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Contributor : Dominique Girod <>
Submitted on : Monday, June 4, 2007 - 12:53:50 PM
Last modification on : Monday, December 14, 2020 - 9:43:08 AM

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  • HAL Id : in2p3-00151437, version 1
  • ARXIV : 0705.4677


D.R. Boito, B. El-Bennich, B. Loiseau, O. Leitner. Resonances and weak interactions in $D^+ \to\pi^+ \pi^- \pi^+$ decays. International Journal of Modern Physics E, World Scientific Publishing, 2007, 16, pp.2876-2879. ⟨in2p3-00151437⟩



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