We measure the branching fraction of the exclusive charmless semileptonic decay B → ωℓνℓ, where ℓ is either an electron or a muon, with the charged B meson recoiling against a tag B meson decaying in the charmed semileptonic modes B → Dℓνℓ or B → D*ℓνℓ. The measurement is based on a dataset of 426.1 fb-1 of e+e- collisions at a CM energy of 10.58 GeV recorded with the BABAR detector at the PEP-II asymmetric B Factory located at the SLAC National Accelerator Laboratory. We also calculate the relevant B → ω hadronic form factors to determine the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element ∣Vub∣.
|Commitee:||DeWolfe, Oliver M., Hamilton, Alexander J., Marino, Alysia D., Stenson, Kevin M.|
|School:||University of Colorado at Boulder|
|School Location:||United States -- Colorado|
|Source:||DAI-B 71/06, Dissertation Abstracts International|
|Keywords:||B meson decay, CKM matrix elements, Electroweak interactions, Omega meson, Semileptonic decays, Tagging|
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