Measurements of CP-Violating Asymmetries in the Decay B^{0}→K^{+}K^{-}K^{0}

Aubert, B. et al. (2007) Measurements of CP-Violating Asymmetries in the Decay B^{0}→K^{+}K^{-}K^{0}. Physical Review Letters, 99 (16). p. 161802. ISSN 0031-9007

Abstract

We analyze the decay B0→K+K-K0 using 383×106 BB̅ events collected by the BABAR detector at SLAC to extract CP violation parameter values over the Dalitz plot. Combining all K+K-K0 events, we find ACP=-0.015±0.077±0.053 and βeff=0.352±0.076±0.026 rad, corresponding to a CP violation significance of 4.8σ. A second solution near π/2-βeff 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+K-K0 with mK+K->1.1 GeV/c2.

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