| Evidence for B -> K eta 'gamma decays at Belle |
| Belle Collaboration
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| 2010
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发表期刊 | PHYSICAL REVIEW D
 |
卷号 | 81期号:11 |
通讯作者 | Wedd, R (reprint author), Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia.
|
摘要 | We present the results of a search for the radiative decay B -> K eta 'gamma and find evidence for B(+) -> K(+)eta 'gamma decays at the 3.3 standard deviation level with a partial branching fraction of (3.6 +/- 1.2 +/- 0.4) x 10(-6), where the first error is statistical and the second systematic. This measurement is restricted to the region of combined K eta ' invariant mass less than 3.4 GeV/c(2). A 90% confidence level upper limit of 6.4 x 10(-6) is obtained for the partial branching fraction of the decay B(0) -> K(0)eta 'gamma in the same K eta ' invariant mass region. These results are obtained from a 605 fb(-1) data sample containing 657 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. |
关键词 | HIGH-ENERGY-PHYSICS
CP VIOLATION
ETA
DETECTOR
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学科领域 | Astronomy & Astrophysics; Physics
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DOI | 10.1103/PhysRevD.81.111104
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收录类别 | SCI
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语种 | 英语
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WOS类目 | Astronomy & Astrophysics
; Physics, Particles & Fields
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WOS记录号 | WOS:000279268300001
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ihep.ac.cn/handle/311005/212954
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专题 | 实验物理中心
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作者单位 | 中国科学院高能物理研究所
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推荐引用方式 GB/T 7714 |
Belle Collaboration. Evidence for B -> K eta 'gamma decays at Belle[J]. PHYSICAL REVIEW D,2010,81(11).
|
APA |
Belle Collaboration.(2010).Evidence for B -> K eta 'gamma decays at Belle.PHYSICAL REVIEW D,81(11).
|
MLA |
Belle Collaboration."Evidence for B -> K eta 'gamma decays at Belle".PHYSICAL REVIEW D 81.11(2010).
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