Measurement of the B̄ 0 → D ∗ + ` − ν̄ Branching Fraction with a Partial Reconstruction Technique
نویسندگان
چکیده
Presented is a precise measurement of the B̄ → D`ν̄` branching fraction using 81.47fb of data collected with the BABAR detector at the PEP-II ee storage ring at the Stanford Linear Accelerator Center. The measurement was performed by partially reconstructing the D meson from B̄ → D`ν̄` decays using only the soft pion of the D → Dπ decay to reconstruct its four vector. The branching fraction was measured to be B(B̄0 → D`ν̄`) = (4.91 ± 0.01stat ± 0.15syst)%.
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