Measurements of CP-violating asymmetries and branching fractions in B decays to ωK and ωπ

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

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Abstract

We present measurements of CP-violating asymmetries and branching fractions for the decays B+→ωπ+, B+→ωK+, and B0→ωK0. The data sample corresponds to 232×106 B¯¯¯B pairs produced by e+e− annihilation at the Υ(4S) resonance. For the decay B0→ωK0S, we measure the time-dependent CP-violation parameters S=0.51+0.35−0.39±0.02, and C=−0.55+0.28−0.26±0.03. We also measure the branching fractions, in units of 10−6, B(B+→ωπ+)=6.1±0.7±0.4, B(B+→ωK+)=6.1±0.6±0.4, and B(B0→ωK0)=6.2±1.0±0.4, and charge asymmetries Ach(B+→ωπ+)=−0.01±0.10±0.01 and Ach(B+→ωK+)=0.05±0.09±0.01.
Original languageEnglish
Article number011106(R)
JournalPhysical Review D
Volume74
Issue number1
DOIs
Publication statusPublished - 1 Jul 2006

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Measurements of CP-violating asymmetries and branching fractions in B decays to omega K and omega pi

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