RESONANCES AND WEAK INTERACTIONS IN D+→ π+π−π+ DECAYS
2007 ◽
Vol 16
(09)
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pp. 2876-2879
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Keyword(s):
D Meson
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We describe the ππS-wave in D+→ π+π−π+ decays using a unitary model for the ππ 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.