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Measurement of the B0→D*-Ds*+ and Ds+→ϕπ+ branching fractions

Aubert, B. et al. (2005) Measurement of the B0→D*-Ds*+ and Ds+→ϕπ+ branching fractions. Physical Review D, 71 (9). 091104. ISSN 1550-7998

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We present measurements of the branching fractions B(B0→D*-Ds*+) and B(Ds+→ϕπ+), based on 123×106 Υ(4S)→BB̅ decays collected by the BABAR detector at the PEP-II asymmetric-energy e+e-  B factory. A partial reconstruction technique is used to measure B(B0→D*-Ds*+) and the decay chain is fully reconstructed to measure the branching fraction product B(B0→D*-Ds*+)×B(Ds+→ϕπ+). Comparing these two measurements provides a model-independent determination of the Ds+→ϕπ+ branching fraction. We obtain B(B0→D*-Ds*+)=(1.88±0.09±0.17)% and B(Ds+→ϕπ+)=(4.81±0.52±0.38)%, where the first uncertainties are statistical and the second systematic.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 30 Jun 2011 09:21
Last Modified: 28 Aug 2021 11:08


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