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Branching fraction measurement of B[superscript +]→ωℓ[superscript +]ν decays

Author(s)
Dujmic, Denis; Sciolla, Gabriella
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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.
Date issued
2013-02
URI
http://hdl.handle.net/1721.1/78619
Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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
ISSN
1550-7998

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