Measurement of the D-s -> mu nu(mu) branching fraction and of the D-s decay constant

Citation
Y. Alexandrov et al., Measurement of the D-s -> mu nu(mu) branching fraction and of the D-s decay constant, PHYS LETT B, 478(1-3), 2000, pp. 31-38
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
478
Issue
1-3
Year of publication
2000
Pages
31 - 38
Database
ISI
SICI code
0370-2693(20000406)478:1-3<31:MOTD-M>2.0.ZU;2-D
Abstract
Using interactions of 350 GeV/c pi(-) in copper and tungsten targets, the b ranching fraction for the leptonic decay B(D-s --> mu v(mu)) is measured to he (0.83 +/- 0.23(stat.)+/- 0.06 +/- 0.18(B(Ds --> phi pi)))%. The resulti ng value for the D-s decay constant is f(D,) = 323 +/- 44 +/- 12 +/- 34. (C ) 2000 Elsevier Science B.V. All rights reserved.