Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2004-04-27
Physics
High Energy Physics
High Energy Physics - Experiment
LaTeX, 10 pages, 7 figures, DPF2003, Philadelphia
Scientific paper
Based on a data sample of 81.7 fb^-1 collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, we present the current status of the measurement of the branching fraction of Upsilon(4S) to B0bar B^0. Our study of the decay was performed through the exclusive decays B0bar to D^{*+} \ell^{-} bar{\nu}_{\ell} using a partial reconstruction method, where the D^{*+} is detected only through the soft pion daughter from the decay D^{*+} to D^{0} pi^{+}.
Godang Romulus
Summers Donald
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