We report a measurement of the branching fractions for B̄→ D(*)(π)-ν̄ decays based on 341.1fb-1 of data collected at the Υ(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-→D0-ν̄)=(2.33±0. 09stat±0.09syst)%, B(B-→D*0-ν̄)=(5.83±0. 15stat±0.30syst)%, B(B̄0→D+-ν̄)=(2.21±0. 11stat±0.12syst)%, B(B̄0→D*+-ν̄)=(5.49±0. 16stat±0.25syst)%, B(B-→D+π - ν̄)=(0.42±0. 06stat±0.03syst)%, B(B-→D*+π - ν̄)=(0.59±0. 05stat±0.04syst)%, B(B̄0→D0π+-ν̄)=(0.43±0. 08stat±0.03syst)%, ; B(B̄0→D*0π+-ν̄)=(0. 48±0.08stat±0.04syst)%. © 2008 The American Physical Society.

Measurement of the branching fractions of exclusive B̄→D(*) (π)l-ν̄l decays in events with a fully reconstructed B meson

PALANO, Antimo;PAPPAGALLO, MARCO IGNAZIO;
2008-01-01

Abstract

We report a measurement of the branching fractions for B̄→ D(*)(π)-ν̄ decays based on 341.1fb-1 of data collected at the Υ(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-→D0-ν̄)=(2.33±0. 09stat±0.09syst)%, B(B-→D*0-ν̄)=(5.83±0. 15stat±0.30syst)%, B(B̄0→D+-ν̄)=(2.21±0. 11stat±0.12syst)%, B(B̄0→D*+-ν̄)=(5.49±0. 16stat±0.25syst)%, B(B-→D+π - ν̄)=(0.42±0. 06stat±0.03syst)%, B(B-→D*+π - ν̄)=(0.59±0. 05stat±0.04syst)%, B(B̄0→D0π+-ν̄)=(0.43±0. 08stat±0.03syst)%, ; B(B̄0→D*0π+-ν̄)=(0. 48±0.08stat±0.04syst)%. © 2008 The American Physical Society.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/179883
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