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Open Access item Measurements of CP-Violating asymmetries in the decay B-0 -> K+ K- K-0

Authors:Garra Tico, J.
Grauges, E.
Davier, Michel
Höcker, Andreas
Azzolini, Virginia
López-March, Neus
Martínez-Vidal, Fernando
Milanés, Diego A.
Oyanguren, Arantza
Chen, Shaomin
Babar Collaboration
Aubert, B.
Keywords:β decays, Physics, [PACS] Hadronic decays of bottom mesons, [PACS] Charge conjugation, parity, time reversal, and other discrete symmetries in particles and fields, [PACS] Determination of electroweak Kobayashi–Maskawa matrix elements
Issue Date:19-Oct-2007
Publisher:American Physical Society
Citation:Physical Review Letters 99(16): 161802 (2007)
Abstract:We analyze the decay B-0 -> K+ K- K-0 using 383 x 10(6) BB[over-bar] events collected by the BABAR detector at SLAC to extract CP violation parameter values over the Dalitz plot. Combining all K+ K- K-0 events, we find A(CP) = -0.015 ± 0.077 ± 0.053 and β(eff) = 0.352 ± 0.076 ± 0.026 rad, corresponding to a CP violation significance of 4.8σ. A second solution near π/2-β(eff) is disfavored with a significance of 4.5 σ. We also report A(CP) and β(eff) separately for decays to Φ(1020)K-0, f(0)(980)K-0, and K+ K- K-0 with m(K+)(K-) > 1.1 GeV/c(2).
Description:7 pages, 3 figures.-- PACS nrs.: 13.25.Hw; 11.30.Er; 12.15.Hh.-- ISI Article Identifier: 000250296000017.-- ArXiv pre-print available at: http://arxiv.org/abs/0706.3885.-- et al.
Publisher version (URL):http://dx.doi.org/10.1103/PhysRevLett.99.161802
Appears in Collections:(IFIC) Artículos

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