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Observation of time-dependent CP violation in B-0 ->eta K-'(0) decays and improved measurements of CP asymmetries in B-0 ->phi K-0, (KSKSKS0)-K-0-K-0 and B-0 -> J/psi K-0 decays
Belle Collaboration
2007
发表期刊PHYSICAL REVIEW LETTERS
卷号98期号:3
通讯作者Chen, KF (reprint author), Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan.
摘要We present improved measurements of CP-violation parameters in B-0 -> phi K-0, eta K-'(0), (KSKSKS0)-K-0-K-0 decays based on a sample of 535 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We obtain sin2 phi(eff)(1) = +0.64 +/- 0.10(stat) +/- 0.04(syst) for B-0 -> eta K-'(0), +0.50 +/- 0.21(stat) +/- 0.06(syst) for B-0 ->phi K-0, and +0.30 +/- 0.32(stat) +/- 0.08(syst) for B-0 -> (KSKSKS0)-K-0-K-0 decays. We have observed CP violation in the B-0 -> eta K-'(0) decay with a significance of 5.6 standard deviations. We also perform an improved measurement of CP asymmetries in B-0 -> J/psi K-0 decays and obtain sin2 phi(1) = +0.642 +/- 0.031(stat) +/- 0.017(syst).
关键词B-DECAYS BELLE PHYSICS
学科领域Physics
DOI10.1103/PhysRevLett.98.031802
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000243587200016
引用统计
被引频次:106[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212776
专题实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Belle Collaboration. Observation of time-dependent CP violation in B-0 ->eta K-'(0) decays and improved measurements of CP asymmetries in B-0 ->phi K-0, (KSKSKS0)-K-0-K-0 and B-0 -> J/psi K-0 decays[J]. PHYSICAL REVIEW LETTERS,2007,98(3).
APA Belle Collaboration.(2007).Observation of time-dependent CP violation in B-0 ->eta K-'(0) decays and improved measurements of CP asymmetries in B-0 ->phi K-0, (KSKSKS0)-K-0-K-0 and B-0 -> J/psi K-0 decays.PHYSICAL REVIEW LETTERS,98(3).
MLA Belle Collaboration."Observation of time-dependent CP violation in B-0 ->eta K-'(0) decays and improved measurements of CP asymmetries in B-0 ->phi K-0, (KSKSKS0)-K-0-K-0 and B-0 -> J/psi K-0 decays".PHYSICAL REVIEW LETTERS 98.3(2007).
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