Measurements of CP-Violating Asymmetries in the Decay B0K+KK0

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. Lett. 99, 161802 – Published 19 October 2007
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Abstract

We analyze the decay B0K+KK0 using 383×106 BB¯ events collected by the BABAR detector at SLAC to extract CP violation parameter values over the Dalitz plot. Combining all K+KK0 events, we find ACP=0.015±0.077±0.053 and βeff=0.352±0.076±0.026rad, corresponding to a CP violation significance of 4.8σ. A second solution near π/2βeff is disfavored with a significance of 4.5σ. We also report ACP and βeff separately for decays to ϕ(1020)K0, f0(980)K0, and K+KK0 with mK+K>1.1GeV/c2.

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  • Received 26 June 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.161802

©2007 American Physical Society

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Vol. 99, Iss. 16 — 19 October 2007

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