Using 226x10(6) B (B) over bar events recorded on the Gamma(4S) resonance with the BABAR detector at the SLAC e(+)e(-) PEP-II storage rings, we reconstruct B--> D({*}0)e(-)(nu) over bar (e) decays using the decay chain D-{*}0 -> D-0 pi(0) and D-0 -> K-pi(+). From the dependence of their differential rate on w, the dot product of the four velocities of B- and D-{*}0, and using the form factor description by Caprini et al. with the parameters F(1) and rho(2)(A1), we obtain the results rho(2)(A1)=1.16 +/- 0.06 +/- 0.08, F(1)vertical bar V-cb vertical bar=(35.9 +/- 0.6 +/- 1.4) x 10(-3), and B(B--> D({*}0)e(-)(nu) over bar (e)) = (5.56 +/- 0.08 +/- 0.41)\%.

Measurement of the decay B--> D(*0)e(-)(nu)over-bar(e)

BIANCHI, Fabrizio;GAMBA, Diego;
2008-01-01

Abstract

Using 226x10(6) B (B) over bar events recorded on the Gamma(4S) resonance with the BABAR detector at the SLAC e(+)e(-) PEP-II storage rings, we reconstruct B--> D({*}0)e(-)(nu) over bar (e) decays using the decay chain D-{*}0 -> D-0 pi(0) and D-0 -> K-pi(+). From the dependence of their differential rate on w, the dot product of the four velocities of B- and D-{*}0, and using the form factor description by Caprini et al. with the parameters F(1) and rho(2)(A1), we obtain the results rho(2)(A1)=1.16 +/- 0.06 +/- 0.08, F(1)vertical bar V-cb vertical bar=(35.9 +/- 0.6 +/- 1.4) x 10(-3), and B(B--> D({*}0)e(-)(nu) over bar (e)) = (5.56 +/- 0.08 +/- 0.41)\%.
2008
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23
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B. Aubert; M. Bona; Y. Karyotakis; J. P. Lees; V. Poireau; X. Prudent; V. Tisserand; A. Zghiche; J. Garra Tico; E. Grauges; L. Lopez; A. Palano; M. Pa...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/45753
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