Measurement of Time-dependent CP-Violating Asymmetries in B0 -> K+K-K0L Decays

2005/07/02 by B. Aubert, BABAR Collaboration, Aubert, B. +1
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Neutrino Physics Research #Particle accelerators and beam dynamics #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0507016

Contributed to Lepton-Photon 2005 Conference

arxiv created 2005/07/02 · openalex publication_date 2005/07/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present preliminary measurements of the CP asymmetry parameters and CP content in B0 --> K+K-K0L decays, with B0 --> phi K0L events excluded. In a sample of 227 M B bar B pairs collected by the BaBar detector at the PEP-II B Factory at SLAC, we find the CP parameters to be S = 0.07 +/- 0.28 (stat) +0.11 -0.12 (syst) C = 0.54 +/- 0.22 (stat) +0.08 -0.09 (syst) where the first error is statistical and the second is systematic. Estimating the fraction of CP-odd final states from angular moments analysis in the K+K-K0S CP-conjugate final state, f_odd (K+K-K0L) = 0.92 +/- 0.07 (stat) +/- 0.06 (syst) we determine sin 2beta_eff = 0.09 +/- 0.33, (stat) +0.13 -0.14 (syst) +/- 0.10 (syst CP-cont)

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