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arXiv · hep-ex/0512067

Measurements of the branching fractions and CP-asymmetries of B- --> D0_(CP) K- decays

The BABAR Collaboration·B. Aubert
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Abstract

We present a study of the decay B- --> D0_(CP) K- and its charge conjugate, where D0_(CP) is reconstructed in CP-even, CP-odd, and non-CP flavor eigenstates, based on a sample of 232 million Y(4S) --> B Bbar decays collected with the BABAR detector at the PEP-II e+e- storage ring. We measure the partial-rate charge asymmetries A_CP+, A_CP- and the ratios R_CP+, R_CP- of the B --> D0 K decay branching fractions as measured in CP+, CP-, and non-CP D0 decays: A_CP+ = 0.35 +/- 0.13 (stat) +/- 0.04 (syst) A_CP- = -0.06 +/- 0.13 (stat) +/- 0.04 (syst) R_CP+ = 0.90 +/- 0.12 (stat) +/- 0.04 (syst) R_CP- = 0.86 +/- 0.10 (stat) +/- 0.05 (syst)

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The BABAR Collaboration, B. Aubert. 2005-12-25. Measurements of the branching fractions and CP-asymmetries of B- --> D0_(CP) K- decays. https://doi.org/10.1103/physrevd.73.051105

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