Loading...
Measurement of the B -> Dl nu branching fractions and form factor
Ammar, Raymond G. Baringer, Philip S. Bean, Alice Besson, David Zeke Coppage, Don Darling, C. Davis, Robin E. P. Kotov, S. Kravchenko, I. Kwak, Nowhan
Ammar, Raymond G.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Darling, C.
Davis, Robin E. P.
Kotov, S.
Kravchenko, I.
Kwak, Nowhan
Citations
Altmetric:
Abstract
Using a sample of 3.3 x 10(6) B-meson decays collected with the CLEO detector at the Cornell Electron Storage Ring, we have studied B- --> D(0)l(-)<(nu)over bar> and (B) over bar(0) --> D(+)l(-)<(nu)over bar> decays, where l(-) can be either e(-) or mu(-). We distinguish B --> Dl nu from other B semileptonic decays by examining the net momentum and energy of the particles recoiling against D - l pairs. We find Gamma(B --> Dl nu) = (14.1 +/- 1.0 +/- 1.2) ns(-1) and derive branching fractions for B- --> D(0)l(-)<(nu)over bar> and (B) over bar(0) --> D(+)l(-)<(nu)over bar> of (2.32 +/- 0.17 +/- 0.20)% and (2.20 +/- 0.16 +/- 0.19)%, respectively, where the uncertainties are statistical and systematic. We also investigate the B --> Dl nu form factor and the implication of the result for \V-cb\.
Description
Date
1999-05
Journal Title
Journal ISSN
Volume Title
Publisher
AMERICAN PHYSICAL SOC
Research Projects
Organizational Units
Journal Issue
Keywords
Citation
Bartelt, J, Csorna, SE, et al. Measurement of the B -> Dl nu branching fractions and form factor. PHYSICAL REVIEW LETTERS. May 1999. 82(19) : 3746-3750