A Measurement of |V(cb)| using anti-B0 ---> D*+ lepton- anti-lepton-neutrino decays - INSPIRE

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A Measurement of |V(cb)| using anti-B0 ---> D*+ lepton- anti-lepton-neutrino decays

OPAL

Collaboration

Nov, 1996

21 pages

Published in:

Phys.Lett.B 395 (1997) 128-140

DOI:

10.1016/S0370-2693(97)00056-7

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit D}^{*}{(2010)}^{-}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}

Report number:

CERN-PPE-96-162

Experiments:

CERN-LEP-OPAL

View in:

CERN Document Server

reference search55 citations

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Abstract: (Elsevier)

We report a measurement of the Cabibbo-Kobayashi-Maskawa matrix element | V cb |. From approximately 4.2 million hadronic Z 0 decays recorded with the OPAL deteector, a sample is selected containing 1251 ± 125 B 0 → D ∗+ ℓ − ν ℓ 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 B 0 rest frame, we derive | V cb | = [36.0 ± 2.1 (stat) ± 2.4 (syst) ± 1.2 (theory)] × 10 −3 .

electron positron: colliding beams
electron positron: annihilation
Z0: electroproduction
Z0: hadronic decay
anti-B0: semileptonic decay
D*(2010)
HQET model
form factor: decay
CKM matrix matrix
OPAL

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Figures(0)

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