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Chinese Academy of Sciences Institutional Repositories Grid
Direct CP violating asymmetry in B-0 -> K+pi(-) decays

文献类型:期刊论文

作者BaBar Collaboration
刊名PHYSICAL REVIEW LETTERS
出版日期2004
卷号93期号:13
关键词NEUTRAL KAON
通讯作者Aubert, B (reprint author), Phys Particules Lab, F-74941 Annecy Le Vieux, France.
英文摘要We present a measurement of the direct CP violating asymmetry in the decay B-0-->K(+)pi(-) using a data sample of 227x10(6) Y(4S)-->B (B) over bar decays ollected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. We observe a total signal yield of n(K)(-)pi(+)+n(K)(+)pi(-)=1606+/-51 decays and measure the asymmetry (n(K)(-)pi(+)-n(K)(+)pi(-))/(n(K)(-)pi(+)+n(K)(+)pi(-))=-0.133+/-0.030(stat)+/-0.009(syst). The probability of observing such an asymmetry in the absence of direct CP violation is 1.3x10(-5), corresponding to 4.2 standard deviations.
学科主题Physics
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000224131400021
公开日期2016-02-26
源URL[http://ir.ihep.ac.cn/handle/311005/212450]  
专题高能物理研究所_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
BaBar Collaboration. Direct CP violating asymmetry in B-0 -> K+pi(-) decays[J]. PHYSICAL REVIEW LETTERS,2004,93(13).
APA BaBar Collaboration.(2004).Direct CP violating asymmetry in B-0 -> K+pi(-) decays.PHYSICAL REVIEW LETTERS,93(13).
MLA BaBar Collaboration."Direct CP violating asymmetry in B-0 -> K+pi(-) decays".PHYSICAL REVIEW LETTERS 93.13(2004).

入库方式: OAI收割

来源:高能物理研究所

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