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. Portolés11 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
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
