Measurement of Time-Dependent CP-Violating Asymmetries in B0 --> phi Ks0, K+ K- Ks0, and eta' Ks0 Decays

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dc.creatorThe Belle Collaboration
dc.creatorAbe, K.
dc.date2003-08-15
dc.date2003-11-12
dc.date.accessioned2026-07-07T12:02:03Z
dc.date.available2026-07-07T12:02:03Z
dc.descriptionWe present an improved measurement of CP-violation parameters in B0 --> phi Ks0, K+ K- Ks0, and eta' Ks0 decays based on a 140 fb-1 data sample 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 three modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. We find that the observed CP asymmetry in the B0 --> phi Ks0 decay differs from the standard model (SM) expectation by 3.5 standard deviations, while the other cases are consistent with the SM.
dc.description10 pages, 4 postscript figures, submitted to Physical Review Letters, also contributed to the XXI International Symposium on Lepton and Photon Interactions at High Energies, Aug 11-16, 2003, Fermilab, Illinois USA
dc.identifierhttps://arxiv.org/abs/hep-ex/0308035
dc.identifierhttp://arxiv.org/abs/hep-ex/0308035
dc.identifierPhys.Rev.Lett.91:261602,2003
dc.identifierdoi:10.1103/PhysRevLett.91.261602
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207307
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of Time-Dependent CP-Violating Asymmetries in B0 --> phi Ks0, K+ K- Ks0, and eta' Ks0 Decays
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