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

Author(s)
Zhao, M.; Yamamoto, R. K.; Sciolla, Gabriella; Dujmic, Denis; Fisher, Peter H; Spitznagel, Michael A; Cowan, Ray F; Taylor, Frank E; ... Show more Show less
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Alternative title
Measurement of the B+→ωl+ν and B+→ηl+ν branching fractions
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
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].
Date issued
2008-08
URI
http://hdl.handle.net/1721.1/57481
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
The BABAR Collaboration et al. “Measurement of the B+--> omega l+ nu and B+--> eta l+ nu branching fractions.” Physical Review D 79.5 (2009): 052011. ©2009 The American Physical Society.
Version: Final published version
ISSN
1550-7998

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