Evidence for direct CP violation in the decay B-+/- -> D-(*()) K-+/-, D -> K-S(0)pi(+)pi(-) and measurement of the CKM phase phi(3)
文献类型:期刊论文
作者 | Belle Collaboration |
刊名 | PHYSICAL REVIEW D |
出版日期 | 2010 |
卷号 | 81期号:11 |
关键词 | SEARCH MATRIX MODES D-0 |
通讯作者 | Lee, MJ (reprint author), Budker Inst Nucl Phys, Novosibirsk 630090, Russia. |
英文摘要 | We present a new measurement of the unitarity triangle angle phi(3) using a Dalitz plot analysis of the K-S(0)pi(+)pi(-) decay of the neutral D meson produced in B-+/- -> D-(*()) K-+/- decays. The method exploits the interference between D-0 and (D) over bar (0) to extract the angle phi(3), strong phase delta, and the ratio r of suppressed and allowed amplitudes. We apply this method to a 605 fb(-1) data sample collected by the Belle experiment. The analysis uses three decays: B-+/- -> DK +/-, and B-+/- -> D*K-+/- with D* -> D pi(0) and D* -> D gamma, as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain phi(3) = 78.4 degrees (+10.8 degrees)(-11.6 degrees) +/- 3.6 degrees (syst) +/- 8.9 degrees (model). CP conservation in this process is ruled out at the confidence level (1 - CL) = 5 X 10(-4), or 3.5 standard deviations. |
学科主题 | Astronomy & Astrophysics; Physics |
类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000278849400001 |
公开日期 | 2016-02-26 |
源URL | [http://ir.ihep.ac.cn/handle/311005/212951] |
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 | Belle Collaboration. Evidence for direct CP violation in the decay B-+/- -> D-(*()) K-+/-, D -> K-S(0)pi(+)pi(-) and measurement of the CKM phase phi(3)[J]. PHYSICAL REVIEW D,2010,81(11). |
APA | Belle Collaboration.(2010).Evidence for direct CP violation in the decay B-+/- -> D-(*()) K-+/-, D -> K-S(0)pi(+)pi(-) and measurement of the CKM phase phi(3).PHYSICAL REVIEW D,81(11). |
MLA | Belle Collaboration."Evidence for direct CP violation in the decay B-+/- -> D-(*()) K-+/-, D -> K-S(0)pi(+)pi(-) and measurement of the CKM phase phi(3)".PHYSICAL REVIEW D 81.11(2010). |
入库方式: OAI收割
来源:高能物理研究所
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