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
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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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