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Measurement of the ratio B(BD*0K)/B(BD*0π) and of the CP asymmetry of BDCP+*0K decays

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. D 71, 031102(R) – Published 15 February 2005

Abstract

We study the decays BD*0π and BD*0K, where the D*0 decays into D0π0, with the D0 reconstructed in the CP-even (CP+) eigenstates KK+ and ππ+ and in the (non-CP) channels Kπ+, Kπ+π+π, and Kπ+π0. Using a sample of about 123×106 BB¯ pairs, we measure the ratios of decay rates RnonCP*B(BDnonCP*0K)B(BDnonCP*0π)=0.0813±0.0040(stat)0.0031+0.0042(syst), and provide the first measurements of RCP+*B(BDCP+*0K)B(BDCP+*0π)=0.086±0.021(stat)±0.007(syst), and of the CP asymmetry ACP+*B(BDCP+*0K)B(B+DCP+*0K+)B(BDCP+*0K)+B(B+DCP+*0K+)=0.10±0.23(stat)0.04+0.03(syst).

  • Figure
  • Received 29 November 2004

DOI:https://doi.org/10.1103/PhysRevD.71.031102

©2005 American Physical Society

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Vol. 71, Iss. 3 — 1 February 2005

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