Time-Dependent CP-Violating Asymmetries in b -> s qbar q Transitions

Details Time-Dependent CP-Violating Asymmetries in b -> s qbar q Transitions Time-Dependent CP-Violating Asymmetries in b -> s qbar q Transitions

2005-04-12

arxiv.org/abs/hep-ex/0504023v2

Phys.Rev.D72:012004,2005

Physics

High Energy Physics

High Energy Physics - Experiment

25 pages, 5 figures, submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.72.012004

We present new measurements of CP-violation parameters in B0 -> phiK0, K+K-Ks, f0(980)Ks, eta'Ks, omegaKs and Kspi0 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. The combined result for the B0->phiK0, K+K-Ks, f0(980)Ks, eta'Ks, omegaKs, Kspi0, and previously reported KsKsKs decays differs from the SM expectation by 2.4 standard deviations.

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