Phenomenological Lagrangian for Nonleptonic Charmed-Meson Decays
Journal
Physical Review D
Journal Volume
31
Journal Issue
5
Pages
1055-1065
Date Issued
1985
Author(s)
Abstract
A gauged chiral-Lagrangian model for charmed-meson decays is proposed. The 0+ uncharmed mesons are included in the model to account for S-wave hadronic final-state interactions. All the hadron fields are incorporated into the phenomenological Lagrangian through the general framework proposed by Coleman, Wess, and Zumino. The model correctly predicts the branching ratios of various two-body D-meson decay modes in both Cabibbo-angle-favored and Cabibbo-angle-suppressed channels, with the only exception of B(D̄ K+0K-)/B(D̄ π+0π-). We have also shown that the prediction of S-wave threshold parameters in ππ scattering can be in good agreement with data, if the SU(3)-symmetry-breaking effect in 0+ uncharmed-meson decay vertices is suitably adjusted. © 1985 The American Physical Society.
Type
journal article