skip to main content
Show Results with:

Measurement of the inclusive semileptonic branching fraction of B mesons and |Vcb|

Phys.Lett.B547:181-192,2002 [Peer Reviewed Journal]

Full text available

  • Title:
    Measurement of the inclusive semileptonic branching fraction of B mesons and |Vcb|
  • Author: The Belle Collaboration
  • Found In: Phys.Lett.B547:181-192,2002 [Peer Reviewed Journal]
  • Subjects: High Energy Physics - Experiment
  • Description: We present a measurement of the electron spectrum from inclusive semileptonic {\it B} decay, using 5.1 fb$^{-1}$ of $\Upsilon(4S)$ data collected with the Belle detector. A high-momentum lepton tag was used to separate the semileptonic {\it B} decay electrons from secondary decay electrons. We obtained the branching fraction, ${\cal B}(B\to X e^+ \nu) = (10.90 \pm 0.12 \pm 0.49)%$, with minimal model dependence. From this measurement, we derive a value for the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}| = 0.0408 \pm 0.0010 {\rm (exp)} \pm 0.0025{\rm (th)}$. Comment: 16 pages, 3 figures, 3 tables
  • Identifier: Arxiv ID: hep-ex/0208033

Searching Remote Databases, Please Wait