A measurement of |Vcb| using B̄0 → D*+ℓ- decays

The OPAL Collaboration

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


We report a measurement of the Cabibbo-Kobayashi-Maskawa matrix element \VCb\. From approximately 4.2 million hadronic Z0 decays recorded with the OPAL detector, a sample is selected containing 1251 ± 125 B̄0 D*+- candidates, where ℓ is either an electron or a muon. Using Heavy Quark Effective Theory calculations for the decay form factor at zero recoil of the D*+ meson in the B̄0 rest frame, we derive |Vcb| = [36.0 ± 2.1 (stat) ± 2.4 (syst) ± 1.2 (theory)] x 10-3.

Original languageEnglish
Pages (from-to)128-140
Number of pages13
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - 6 Mar 1997
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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