Measurements of the branching fractions and CP-asymmetries of B- --> D0(CP) K- decays
The BABAR Collaboration, B. Aubert
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 ACP+, ACP- and the ratios RCP+, RCP- of the B --> D0 K decay branching fractions as measured in CP+, CP-, and non-CP D0 decays: ACP+ = 0.35 +/- 0.13 (stat) +/- 0.04 (syst) ACP- = -0.06 +/- 0.13 (stat) +/- 0.04 (syst) RCP+ = 0.90 +/- 0.12 (stat) +/- 0.04 (syst) RCP- = 0.86 +/- 0.10 (stat) +/- 0.05 (syst)
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