First evidence of psi(2S) -> Omega(-)(Omega)over-bar(+)
文献类型：期刊论文
| 作者 | BESII Callaboration |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2012 |
| 卷号 | 36期号:11页码:1040-1045 |
| 关键词 | BARYON-ANTIBARYON PAIRS DECAYS |
| 通讯作者 | Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China. |
| 英文摘要 | The decay psi(2S) -> Omega(-)(Omega) over bar (+) is analyzed using 14 x 10(6) psi(2S) events recorded by the Beijing Spectrometer II (BES II) at the Beijing Electron Positron Collider (BEPC). Based upon events with no missing charged tracks and a satisfactory four-constraint kinematic fit, we determine the upper limit for the branching fraction of psi(2S) -> Omega(-)(Omega) over bar (+) to be 1.5 x 10(-4) at a 90% confidence level. By including events with one missing charged track, we are able to report the first evidence of an Omega(-)(Omega) over bar (+) signal with a statistical significance of 3.1 sigma. The branching fraction of psi(2S) -> Omega(-)(Omega) over bar (+) is determined to be (4.80 +/- 1.56(stat)+/- 1.30(sys)) x 10(-5). |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000311660900002 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213391]  |
| 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 | BESII Callaboration. First evidence of psi(2S) -> Omega(-)(Omega)over-bar(+)[J]. CHINESE PHYSICS C,2012,36(11):1040-1045. |
| APA | BESII Callaboration.(2012).First evidence of psi(2S) -> Omega(-)(Omega)over-bar(+).CHINESE PHYSICS C,36(11),1040-1045. |
| MLA | BESII Callaboration."First evidence of psi(2S) -> Omega(-)(Omega)over-bar(+)".CHINESE PHYSICS C 36.11(2012):1040-1045. |
入库方式： OAI收割
来源：高能物理研究所
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