Measurement of time-dependent CP-violating asymmetries in B0-->phiK(0)S, K+K-K0(S), and eta'K0(S) decays.
We present an improved measurement of CP-violation parameters in B0-->phiK(0)(S), K(+)K(-)K(0)(S), and eta(')K(0)(S) 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 B-->phiK(0)(S) decay differs from the standard model (SM) expectation by 3.5 standard deviations, while the other cases are consistent with the SM.
Abe
K
K
High Energy Accelerator Research Organization (KEK), Tsukuba.
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Adachi
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Akai
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Akatsu
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Banerjee
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Bizjak
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Bozek
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Bracko
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Brodzicka
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Browder
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Chao
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Chen
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Chistov
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Choi
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Chuvikov
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Danilov
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Dong
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Eidelman
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Enari
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Flanagan
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Fukunaga
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Furukawa
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Gabyshev
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Gershon
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Guo
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Haba
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Hagner
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Hastings
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Hazumi
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Higuchi
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Hsiung
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Huang
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Igarashi
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Ikeda
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Inami
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Ishikawa
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Ishino
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Itoh
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Iwasaki
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Iwasaki
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Iwasaki
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Kamitani
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Kataoka
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Kichimi
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Kumar
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Kwon
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Leder
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Lesiak
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Limosani
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MacNaughton
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Marlow
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