2018 Impact factor 4.843
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 )

Abstract
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