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)
Belle Collaboration
刊名PHYSICAL REVIEW D
2010
卷号81期号:11
关键词SEARCH MATRIX MODES D-0
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.81.112002
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.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别SCI
语种英语
WOS记录号WOS:000278849400001
引用统计
被引频次:72[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/311005/212951
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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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).
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