Measurement of the Decay B- --> D*0 e- nubar

Details Measurement of the Decay B- --> D*0 e- nubar Measurement of the Decay B- --> D*0 e- nubar

2007-12-20

arxiv.org/abs/0712.3493v3

Phys.Rev.Lett.100:231803,2008

Physics

High Energy Physics

High Energy Physics - Experiment

version 1: 8 pages, 1 postscript figure, submitted to Phys. Rev. Lett.; version 2: still some wording changes before submissio

Scientific paper

10.1103/PhysRevLett.100.231803

Using 226 million BBbar events recorded on the Upsilon(4S) resonance with the BABAR detector at the SLAC e+e- PEPII storage rings, we reconstruct B- -> D*0 e- nubar decays using the decay chain D*0 -> D0 pi0 and D0 -> 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_A1^2, we obtain the results rho_A1^2 = 1.16 +- 0.06 +- 0.08, F(1)|V_cb| = (35.9 +- 0.6 +- 1.4) 10^-3, and BF(B- -> D*0 e- nubar) = (5.56 +- 0.08 +- 0.41)%.

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