Measurement of B decays to phi K gamma

B. Aubert, J.Y. Chen, K. Peters, L.L. Zhang, S. Chen, W. Wang, X.H. Li, M.A. Baak, G. Raven, H. Snoek, P. David, H. Schroder, H. Liu, N. van Bakel, A. Wagner, Z. Yu

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We search for the decays B-→ K-γ and B̄0→ K̄0γ in a data sample of 228×106 BB̄ pairs collected at the Υ(4S) resonance with the BABAR detector. We measure the branching fraction B(B-→ K-γ)=(3.5±0.6±0.4)×10-6 and set an upper limit B(B̄0→ K̄0γ)<2.7×10-6 at the 90% confidence level. We also measure the direct CP asymmetry in B-→ K-γ, ACP=(-26±14±5)%. The uncertainties are statistical and systematic, respectively. © 2007 The American Physical Society.
Original languageEnglish
JournalPhysical Review D
Issue number5
Publication statusPublished - 2007

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Measurement of B decays to phi K gamma


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