TY - JOUR
T1 - Measurement of |Vcb| with B0 → D*+ℓ-v at CLEO
AU - Cronin-Hennessy, Daniel
PY - 2001
Y1 - 2001
N2 - We determine the CKM matrix element, |Vcb|, by measuring the differential decay rate of B → D*+ℓv as a function of w = vB · νD*. We extrapolate the decay rate to the kinematic point, w = 1, where the form factor, F(w), is accurately predicted by theory. We find f(1)|vcb| = 0.0424 ± 0.0018(stat.) ± 0.0019(syst.). Integration of the differential decay rate, dT/dw, yields the B → D*+ℓv branching fraction, B(B → D*+ℓv = (5.66 ± 0.29 ± 0.33)%. The data are derived from 3.3 million BB events collected by the CLEO detector at CESR.
AB - We determine the CKM matrix element, |Vcb|, by measuring the differential decay rate of B → D*+ℓv as a function of w = vB · νD*. We extrapolate the decay rate to the kinematic point, w = 1, where the form factor, F(w), is accurately predicted by theory. We find f(1)|vcb| = 0.0424 ± 0.0018(stat.) ± 0.0019(syst.). Integration of the differential decay rate, dT/dw, yields the B → D*+ℓv branching fraction, B(B → D*+ℓv = (5.66 ± 0.29 ± 0.33)%. The data are derived from 3.3 million BB events collected by the CLEO detector at CESR.
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U2 - 10.1142/S0217751X01007674
DO - 10.1142/S0217751X01007674
M3 - Article
AN - SCOPUS:0035558954
SN - 0217-751X
VL - 16
SP - 639
EP - 641
JO - International Journal of Modern Physics A
JF - International Journal of Modern Physics A
IS - SUPPL. 1B
ER -