2021 Impact factor 4.991
Particles and Fields
Eur. Phys. J. C 27, 243-254 (2003)
DOI: 10.1140/epjc/s2002-01116-0

Semileptonic decays of charmed mesons in the effective action of QCD

G. Amorós1, S. Noguera1, 2 and J. Portolés1

1  Departament de Física Teòrica, IFIC, Universitat de València - CSIC, Apt. Correus 22085, 46071 València, Spain
2  Departament de Física Teòrica, Universitat de València, C/ Dr. Moliner, 50, 46100 Burjassot (València), Spain

(Received: 28 October 2002 / Published online: 24 January 2003 )

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 $D \rightarrow P(0^-) \ell^+ \nu_{\ell}$ at leading order in the 1/NC 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.

© Società Italiana di Fisica, Springer-Verlag 2003