CURRENT S-QUARK MASS CORRECTIONS TO THE FORM-FACTORS OF D-MESON SEMILEPTONIC DECAYS

Citation
F. Hussain et al., CURRENT S-QUARK MASS CORRECTIONS TO THE FORM-FACTORS OF D-MESON SEMILEPTONIC DECAYS, Physics letters. Section B, 348(3-4), 1995, pp. 609-614
Citations number
29
Categorie Soggetti
Physics
Journal title
ISSN journal
03702693
Volume
348
Issue
3-4
Year of publication
1995
Pages
609 - 614
Database
ISI
SICI code
0370-2693(1995)348:3-4<609:CSMCTT>2.0.ZU;2-J
Abstract
The infinite mass effective theory, when a heavy quark mass tends to i nfinity, and Chiral perturbation theory at the quark level, based on t he extended Nambu-Jona-Lasinio model with linear realization of chiral U(3) x U(3) symmetry, are applied to the calculation of current s-qua rk mass corrections to the form factors of the D --> ($) over bar K e( +) v(e) and D --> ($) over bar K e(+)v(e) decays. These corrections t urn out to be quite significant, of the order of 7-20%. The theoretica l results are compared with experimental data.