Branching fraction measurement of B→ωℓν decays

The BaBar Collaboration, Philip Clark

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We present a measurement of the B+→ωℓ+ν branching fraction based on a sample of 467 million BB̅ pairs recorded by the BABAR detector at the SLAC PEP-II e+e- collider. We observe 1125±131 signal decays, corresponding to a branching fraction of B(B+→ωℓ+ν)=(1.21±0.14±0.08)×10-4, where the first error is statistical and the second is systematic. The dependence of the decay rate on q2, 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.
Original languageEnglish
JournalPhysical Review D
Early online date30 May 2012
Publication statusPublished - 12 Feb 2013


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