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Observation of D+ -> K+eta(()'()) and Search for CP Violation in D+ -> pi(+)eta(()'()) Decays
Belle Collaboration
2011
发表期刊PHYSICAL REVIEW LETTERS
卷号107期号:22
通讯作者Won, E (reprint author), Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia.
摘要We report the first observation of the doubly Cabibbo-suppressed decays D+ -> K+eta(()'()) using a 791 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The ratio of the branching fractions of doubly Cabibbo-suppressed relative to singly Cabibbo-suppressed D+ -> pi(+)eta(()'()) decays are B(D+ -> K+eta) / B(D+ -> pi(+)eta) =(3.06 +/- 0.43 +/- 0.14)% and B(D+ -> K+eta')/B(D+->pi(+)eta') = (3.77 +/- 0.39 +/- 0.10)%. From these, we find that the relative final-state phase difference between the tree and annihilation amplitudes in D+ decays, delta(TA), is (72 +/- 9)degrees or (288 +/- 9)degrees. We also report the most precise measurements of CP asymmetries to date: A(CP)(D+->pi+eta) = (+1.74 +/- 1.13 +/- 0.19)% and A(CP)(D+->pi+eta') = (-0.12 +/- 1.12 +/- 0.17)%.
关键词BELLE
学科领域Physics
DOI10.1103/PhysRevLett.107.221801
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000297292000003
引用统计
被引频次:9[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/311005/213140
专题实验物理中心
作者单位中国科学院高能物理研究所
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Belle Collaboration. Observation of D+ -> K+eta(()'()) and Search for CP Violation in D+ -> pi(+)eta(()'()) Decays[J]. PHYSICAL REVIEW LETTERS,2011,107(22).
APA Belle Collaboration.(2011).Observation of D+ -> K+eta(()'()) and Search for CP Violation in D+ -> pi(+)eta(()'()) Decays.PHYSICAL REVIEW LETTERS,107(22).
MLA Belle Collaboration."Observation of D+ -> K+eta(()'()) and Search for CP Violation in D+ -> pi(+)eta(()'()) Decays".PHYSICAL REVIEW LETTERS 107.22(2011).
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