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Evidence for B+->(K)over-bar(0)K(+) and B-0 -> K-0(K)over-bar(0), and measurement of the branching fraction and search for direct CP violation in B+-> K-0 pi(+)
BaBar Collaboration
2005
发表期刊PHYSICAL REVIEW LETTERS
卷号95期号:22
通讯作者Aubert, B (reprint author), Lab Phys Particules, F-74941 Annecy Le Vieux, France.
摘要We present evidence for the b -> d penguin-dominated decays B+->(K) over bar K-0(+) and B-0-> K-0(K) over bar (0) in 227x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector. We measure the branching fractions B(B+->(K) over bar K-0(+))=(1.5 +/- 0.5 +/- 0.1)x10(-6)(< 2.4x10(-6)) and B(B-0-> K-0(K) over bar (0))=(1.19(-0.35)(+0.40)+/- 0.13)x10(-6), where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B+-> K(0)pi(+))=(26.0 +/- 1.3 +/- 1.0)x10(-6) and CP-violating charge asymmetry A(CP)(K(0)pi(+))=-0.09 +/- 0.05 +/- 0.01, where the uncertainties are statistical and systematic, respectively.
关键词CKM ANGLE-GAMMA DECAYS FACTORIZATION ASYMMETRIES PHYSICS PHASE
学科领域Physics
DOI10.1103/PhysRevLett.95.221801
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000233458500010
引用统计
被引频次:8[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/311005/212624
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
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BaBar Collaboration. Evidence for B+->(K)over-bar(0)K(+) and B-0 -> K-0(K)over-bar(0), and measurement of the branching fraction and search for direct CP violation in B+-> K-0 pi(+)[J]. PHYSICAL REVIEW LETTERS,2005,95(22).
APA BaBar Collaboration.(2005).Evidence for B+->(K)over-bar(0)K(+) and B-0 -> K-0(K)over-bar(0), and measurement of the branching fraction and search for direct CP violation in B+-> K-0 pi(+).PHYSICAL REVIEW LETTERS,95(22).
MLA BaBar Collaboration."Evidence for B+->(K)over-bar(0)K(+) and B-0 -> K-0(K)over-bar(0), and measurement of the branching fraction and search for direct CP violation in B+-> K-0 pi(+)".PHYSICAL REVIEW LETTERS 95.22(2005).
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