G. Amoros, S. Noguera, J. Portoles
Published 2001-09-19, updated 2002-11-21Version 3
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^+ nu_l at leading order in the 1/N_C expansion and, by demanding their QCD-ruled asymptotic behaviour, we constrain the couplings of the Lagrangian. The features of the model-independent parameterization of form factors provided and their relevance for the analysis of experimental data are pointed out.
Comments: 1+24 pages, 1 figure. Updated version. Conclusions unchanged. Accepted for publication in The European Physical Journal C
Journal: Eur.Phys.J. C27 (2003) 243-254
Charmed mesons and leptons from semileptonic decays at the LHC
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Probing $D^*_{s0}(2317)$ in the decays of $B$ to two charmed mesons
