Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states
文献类型：期刊论文
| 作者 | Belle Collaboration |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2013 |
| 卷号 | 88期号:1 |
| 关键词 | BELLE IDENTIFICATION MESON KEKB |
| 通讯作者 | Shen, CP (reprint author), Beihang Univ, Beijing 100191, Peoples R China. |
| 英文摘要 | Using samples of 102 million Upsilon(1S) and 158 million Upsilon(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to (KSK+)-K-0 pi(-) and charge-conjugate (c.c.) states, pi(+) pi(-) pi(0) pi(0), and pi(+) pi(-) pi(0), and to the two-body Vector-Pseudoscalar (K*(892)0 (K) over bar (0) + c.c., K*(892)K--(+) + c.c., omega pi(0), and rho pi) final states. For the first time, signals are observed in the modes Upsilon(1S) -> K-S(0) K+ pi(-) + c.c., pi(+) pi(-) pi(0) pi(0), and Upsilon(2S) -> pi(+) pi(-) pi(0) pi(0), and evidence is found for the modes Upsilon(1S) -> pi(+) pi(-) pi(0), K-*(892)(0)(K) over bar (0) + c.c., and Upsilon(2S) -> K-S(0) K+ pi(-) + c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3 sigma. The ratios of the branching fractions of Upsilon(2S) and Upsilon(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka- suppressed bottomonium decays. |
| 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:000322145600001 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213569]  |
| 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. Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states[J]. PHYSICAL REVIEW D,2013,88(1). |
| APA | Belle Collaboration.(2013).Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states.PHYSICAL REVIEW D,88(1). |
| MLA | Belle Collaboration."Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states".PHYSICAL REVIEW D 88.1(2013). |
入库方式： OAI收割
来源：高能物理研究所
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