Measurement of the B+--> omega l+ nu and B+--> eta l+ nu branching fractions

• Main Authors: Fisher, Peter H. (Contributor), Zhao, M. (Contributor), Yamamoto, R. K. (Contributor), Spitznagel, M. (Contributor), Sciolla, Gabriella (Contributor), Dujmic, Denis (Contributor), Cowan, Ray Franklin (Contributor), Taylor, Frank E. (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2010-08-10T15:18:03Z.
• Subjects: Article
• Online Access: Get fulltext

We present a study of the charmless semileptonic B-meson decays B+-->omegaℓ+ν and B+-->etaℓ+nu. The analysis is based on 3.83×108 BB[over-bar] pairs recorded at the Υ(4S) resonance with the BABAR detector. The ω mesons are reconstructed in the channel omega-->pi+pi-pi0 and the eta mesons in the channels eta-->pi+pi-pi0 and eta-->γγ. We measure the branching fractions B(B+-->omegaℓ+nu)=(1.14±0.16stat±0.08syst)×10[superscript -4] and B(B+-->etaℓ+nu)=(0.31±0.06stat±0.08syst)×10[superscript -4].
United States Department of Energy
National Science Foundation
Natural Sciences and Engineering Research Council of Canada
Institute of High Energy Physics (China)
Commissariat à l'Energie Atomique (France)
Institut National de Physique Nucleaire et Physique des Particules/CNRS
Bundesministerium für Bildung und Forschung, Germany
Deutsche Forschungsgemeinschaft
Istituto Nazionale di Fisica Nucleare of Italy
FOM of the Netherlands
Norges forskningsråd
Russian Ministry of Science and Technology
Particle Physics and Astronomy Research Council, United Kingdom