LEPTONIC DECAY CONSTANTS OF D-S, AND B-S, MESONS FROM QCD SUM-RULES

Authors
DOMINGUEZ CA PAVER N
Citation
Ca. Dominguez et N. Paver, LEPTONIC DECAY CONSTANTS OF D-S, AND B-S, MESONS FROM QCD SUM-RULES, Physics letters. Section B, 318(4), 1993, pp. 629-634
Citations number
30
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
318
Issue
4
Year of publication
1993
Pages
629 - 634
Database
ISI
SICI code
0370-2693(1993)318:4<629:LDCODA>2.0.ZU;2-X
Abstract
The leptonic decay constants of D-s and B-s mesons are determined in t he framework of relativistic Hilbert moments and Laplace transform QCD sum rules. When normalized to the corresponding sum rules for f(D) an d f(B), we obtain the stable results: f(Ds)/f(D) = 1.21 +/- 0.06, and f(Bs)/f(B) = 1.22 +/- 0.02, essentially independent of the type of sum rule and of the value of the heavy quark mass.