Measurement Of The Bar B 0 U2192 D L Bar V Branching Fraction With A Partial Reconstruction Technique
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Measurement of the $\bar{B}$0 {u2192} D*+l-$\bar{v}$ Branching Fraction with a Partial Reconstruction Technique
Presented is a precise measurement of the $ar{B}$0 → D*+l-$ar{v}$l branching fraction using 81.47 fb-1 of data collected with the BABAR detector at the PEP-II e+e- storage ring at the Stanford Linear Accelerator Center. The measurement was performed by partially reconstructing the D*+ meson from $ar{B}$0 → D*+l-$ar{v}$l decays using only the soft pion of the D*+ → D0?+ decay to reconstruct its four vector. The branching fraction was measured to be ?($ar{B}$0 → D*+l-$ar{v}$l) = (4.91 ± 0.01stat ± 0.15syst)%.
Measurement of the $\bar{B}$0 2!D*+l-$\bar{v}$ Branching Fraction with a Partial Reconstruction Technique
Presented is a precise measurement of the $\bar{B}$0 → D*+l-$\bar{v}$l branching fraction using 81.47 fb-1 of data collected with the BABAR detector at the PEP-II e+e- storage ring at the Stanford Linear Accelerator Center. The measurement was performed by partially reconstructing the D*+ meson from $\bar{B}$0 → D*+l-$\bar{v}$l decays using only the soft pion of the D*+ → D0[pi]+ decay to reconstruct its four vector. The branching fraction was measured to be [beta]($\bar{B}$0 → D*+l-$\bar{v}$l) = (4.91 ± 0.01stat ± 0.15syst)%.
Measurement of the B0 ---] D*- A+(1) Branching Fraction with Partially Reconstructed D*
The B° 2!D*− a1 branching fraction has been measured with data collected by the BaBar experiment in 1999 and 2000 corresponding to a total integrated luminosity of 20.6 fb−1. Signal events have been selected using a partial reconstruction technique, in which only the a1 and the slow pion ([pi]{sub s}) from the D*− decay are identified. A signal yield of 18400 ± 1200 events has been found, corresponding to a preliminary branching fraction of (1.20 ± 0.07(stat) ± 0.14(syst))%.