New Measurements of Time-Dependent CP-Violating Asymmetries in b --> s Transitions at Belle

Details New Measurements of Time-Dependent CP-Violating Asymmetries in b --> s Transitions at Belle New Measurements of Time-Dependent CP-Violating Asymmetries in b --> s Transitions at Belle

2004-09-23

arxiv.org/abs/hep-ex/0409049v2

Physics

High Energy Physics

High Energy Physics - Experiment

23 pages, 3 figures, submitted to ICHEP2004, Beijing, China

Scientific paper

We present new measurements of CP-violation parameters in B0 --> phi K0, K+ K- Ks, f0(980) Ks, eta' Ks, omega Ks, Ks pi0, and K*0 gamma (K*0 --> Ks pi0) decays based on a sample of 275 x 10^6 BBbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One neutral B meson is fully reconstructed in one of the specified decay channels, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters for each of the decay modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. All results are preliminary.

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