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Amorós Vicente, Gabriel; Noguera Puchol, Santiago; Portolés Ibáñez, Jorge | |||
Aquest document és un/a article, creat/da en: 2003 | |||
Este documento está disponible también en : 10.1140/epjc/s2002-01116-0 |
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Within the framework of phenomenological Lagrangians we construct the effective action of QCD relevant for the study of semileptonic decays of charmed mesons. Hence we evaluate the form factors of D --> P(0(-))l(+) v(l) at leading order in the 1/N-C expansion and, by demanding their QCD-ruled asymptotic behavior, we constrain the couplings of the Lagrangian. The features of the model-independent parameterization of form factors are provided, and their relevance for the analysis of experimental data are pointed out. | |||
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