We present measurements of the branching fractions B(B0→D*-Ds *+) and B(Ds+→π+), based on 123×106Υ(4S)→BB̄ 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+→π+). Comparing these two measurements provides a model-independent determination of the Ds+→π+ branching fraction. We obtain B(B0→D*-Ds*+)=(1.88±0.09±0.17)% and B(Ds+→π+)=(4.81±0.52±0.38)%, where the first uncertainties are statistical and the second systematic.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Measurement of the B0→D*-Ds*+ and Ds+→π+ branching fractions. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 71(9) [10.1103/PhysRevD.71.091104].

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

CARPINELLI, Massimo;
2005

Abstract

We present measurements of the branching fractions B(B0→D*-Ds *+) and B(Ds+→π+), based on 123×106Υ(4S)→BB̄ 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+→π+). Comparing these two measurements provides a model-independent determination of the Ds+→π+ branching fraction. We obtain B(B0→D*-Ds*+)=(1.88±0.09±0.17)% and B(Ds+→π+)=(4.81±0.52±0.38)%, where the first uncertainties are statistical and the second systematic.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2005
71
9
091104
none
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Measurement of the B0→D*-Ds*+ and Ds+→π+ branching fractions. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 71(9) [10.1103/PhysRevD.71.091104].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389895
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