We analyze the decay B0→K+K-K0 using 383×106 BB̄ 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±0.026rad, 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 (1020)K0, f0(980)K0, and K+K-K0 with mK+K->1.1GeV/c2.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Measurements of CP-violating asymmetries in the decay B0→K+K-K0. PHYSICAL REVIEW LETTERS, 99(16) [10.1103/PhysRevLett.99.161802].

Measurements of CP-violating asymmetries in the decay B0→K+K-K0

CARPINELLI, Massimo;
2007

Abstract

We analyze the decay B0→K+K-K0 using 383×106 BB̄ 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±0.026rad, 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 (1020)K0, f0(980)K0, and K+K-K0 with mK+K->1.1GeV/c2.
Articolo in rivista - Articolo scientifico
Computational methods; Numerical methods; Parameter estimation; Problem solving; Radioactive materials; BABAR detectors; Decay asymmetries; Violation parameters; Particle detectors;
English
2007
99
16
161802
none
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Measurements of CP-violating asymmetries in the decay B0→K+K-K0. PHYSICAL REVIEW LETTERS, 99(16) [10.1103/PhysRevLett.99.161802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389668
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