Measurement of the Branching Fraction and CP-violating Asymmetries in Neutral B Decays to D*+-D-+

Details Measurement of the Branching Fraction and CP-violating Asymmetries in Neutral B Decays to D*+-D-+ Measurement of the Branching Fraction and CP-violating Asymmetries in Neutral B Decays to D*+-D-+

2003-03-04

arxiv.org/abs/hep-ex/0303004v2

Phys.Rev.Lett.90:221801,2003

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 3 figures, published as Phys. Rev. Lett 90 (2003) 221801

Scientific paper

10.1103/PhysRevLett.90.221801

We present measurements of the branching fraction and CP-violating asymmetries for neutral B decays to D*+-D-+. The measurement uses a data sample of approximately 88 million Y(4S) --> B Bbar decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We measure the branching fraction to be (8.8 +- 1.0 +- 1.3) x 10^-4 and the time-integrated CP-violating asymmetry between the rates to D*+D- and D*-D+ to be A = -0.03 +- 0.11 +- 0.05. We also measure the time-dependent CP-violating asymmetry parameters to be S-+ = -0.24 +- 0.69 +- 0.12, C-+ = -0.22 +- 0.37 +- 0.10 for B --> D*-D+ and S+- = -0.82 +- 0.75 +- 0.14$, C+- = -0.47 +- 0.40 +- 0.12 for B --> D*+D-. In each case the first error is statistical and the second error is systematic.

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