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Improved Measurement of |V_ub| with Inclusive Semileptonic B Decays

We report a new measurement of the CKM parameter V_ub made with a sample of 9.7 million B B-bar events collected with the CLEO II detector. Using Heavy Quark theory, we combine the observed yield of leptons from semileptonic B decay in the end-point momentum interval 2.2-2.6 GeV/c with recent CLEO II data on B --> X_s gamma to find |V_ub| = (4.08 +/- 0.34 +/- 0.44 +/- 0.16 +/- 0.24) x 10^-3, where the first two uncertainties are experimental and the last two are from theory.

preprint2002arXivOpen access
A. BornheimCLEO Collaboration
hep-ex
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Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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A. BornheimCLEO Collaboration

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