Branching fraction measurement of B[superscript +]→ωℓ[superscript +]ν decays
Name
Lees-2013-Branching fraction measurement of B+.pdf
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355.85 KB
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Author(s)
Dujmic, Denis
Sciolla, Gabriella
Date Issued
February 2013
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. P., V. Poireau, V. Tisserand, et al. Branching fraction measurement of B[superscript +]→ωℓ[superscript +]ν decays. Physical Review D 87(3), 2013. © 2013 American Physical Society
Version
Final published version
Abstract
We present a measurement of the B[superscript +]→ωℓ[superscript +]ν branching fraction based on a sample of 467 million BB̅ pairs recorded by the BABAR detector at the SLAC PEP-II e[superscript +]e[superscript -] collider. We observe 1125±131 signal decays, corresponding to a branching fraction of B(B[superscript +]→ωℓ[superscript +]ν)=(1.21±0.14±0.08)×10[superscript -4], where the first error is statistical and the second is systematic. The dependence of the decay rate on q[superscript 2], the invariant mass squared of the leptons, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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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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DOI of Published Version
https://doi.org/10.1103/PhysRevD.87.032004
