Measurement of the branching fractions of exclusive (B)over-bar -> D-(*)(pi)l(-)(nu)over-bar(l) decays in events with a fully reconstructed b meson

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doi:10.1103/PhysRevLett.100.151802

We report a measurement of the branching fractions for (B) over bar -> D-(*)(pi)center dot(-)(nu) over bar (center dot) decays based on 341.1 fb(-1) of data collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II e(+)e(-) storage rings. Events are tagged by fully reconstructing one of the B mesons in a hadronic decay mode. We obtain B(B--> D-0 center dot(-)(nu) over bar (center dot))=(2.33 +/- 0.09(stat)+/- 0.09(syst))%, B(B--> D-*0 center dot(-)(nu) over bar (center dot))=(5.83 +/- 0.15(stat)+/- 0.30(syst))%, B((nu) over bar (0)-> D+center dot(-)(nu) over bar (center dot))=(2.21 +/- 0.11(stat)+/- 0.12(syst))%, B((nu) over bar (0)-> D*+center dot(-)(nu) over bar (center dot))=(5.49 +/- 0.16(stat)+/- 0.25(syst))%, B(B--> D+pi(-)center dot(-)(nu) over bar (center dot))=(0.42 +/- 0.06(stat)+/- 0.03(syst))%, B(B--> D*+pi(-)center dot(-)(nu) over bar (center dot))=(0.59 +/- 0.05(stat)+/- 0.04(syst))%, B((nu) over bar (0)-> D-0 pi(+)center dot(-)(nu) over bar (center dot))=(0.43 +/- 0.08(stat)+/- 0.03(syst))%, and B((nu) over bar (0)-> D-*0 pi(+)center dot(-)(nu) over bar (center dot))=(0.48 +/- 0.08(stat)+/- 0.04(syst))%.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J.p., Poireau, V., Prudent, X., et al. (2008). Measurement of the branching fractions of exclusive (B)over-bar -> D-(*)(pi)l(-)(nu)over-bar(l) decays in events with a fully reconstructed b meson. PHYSICAL REVIEW LETTERS, 100(15), 1-7 [10.1103/PhysRevLett.100.151802].