Improved measurement of |V(cb)| using anti-B ---> D* l nu decays - INSPIRE

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Improved measurement of |V(cb)| using anti-B ---> D* l nu decays

CLEO

Collaboration

•

Roy A. Briere
(
- Carnegie Mellon U.
)

Mar, 2002

10 pages

Published in:

Phys.Rev.Lett. 89 (2002) 081803

e-Print:

hep-ex/0203032 [hep-ex]

DOI:

10.1103/PhysRevLett.89.081803

PDG:

{{\mathit B}^{+}}

\rightarrow

{{\overline{\mathit D}}^{*}{(2007)}^{0}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}

Report number:

CLNS-01-1773,
CLEO-01-26

Experiments:

CESR-CLEO-II

View in:

ADS Abstract Service

reference search55 citations

Citations per year

Abstract: (arXiv)

We determine the weak coupling |Vcb| between the b and c quarks using a sample of 3 million BB-bar events in the CLEO detector at the Cornell Electron Storage Ring. We determine the yield of reconstructed B --> D* l nu decays as a function of w, the boost of the D* in the B rest frame, and from this we obtain the differential decay rate dGamma/dw. By extrapolating dGamma/dw to w=1, the kinematic end-point at which the D* is at rest relative to the B, we extract the product |Vcb|F(1), where F(1) is the form factor at w=1. We find |Vcb|F(1) = 0.0431 +- 0.0013 (stat.) +- 0.0018 (syst.).

electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
anti-B: semileptonic decay
D*(2010)
anti-B: width
form factor: decay
CKM matrix matrix
CLEO

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