A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson
文献类型：期刊论文
| 作者 | KLOE Collaboration |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2009 |
| 期号 | 7 |
| 关键词 | PARTICLE PHYSICS KLOE DETECTOR |
| 通讯作者 | Di Micco, B (reprint author), Univ Roma Tre, Dipartimento Fis, Via Vasca Navale 84, Rome, Italy. |
| 英文摘要 | We update the values of the eta-eta' mixing angle and of the eta' gluonium content by fitting our measurement R(phi) = BR(phi -> eta gamma)/BR(phi -> eta gamma) together with several vector meson radiative decays to pseudoscalars (V -> P gamma), pseudoscalar mesons radiative decays to vectors (P -> V gamma) and the eta' -> gamma gamma, pi(0) -> gamma gamma widths. From the fit we extract a gluonium fraction of Z(G)(2) = 0.12 +/- 0.04, the pseudoscalar mixing angle psi(P) = (40.4 +/- 0.6)degrees and the phi - omega mixing angle psi(V) = (3.32 +/- 0.09)degrees. Z(G)(2) and psi(P) are fairly consistent with those previously published. We also evaluate the impact on the eta' gluonium content determination of future experimental improvements of the eta' branching ratios and decay width. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000270219900105 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212907]  |
| 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 | KLOE Collaboration. A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson[J]. JOURNAL OF HIGH ENERGY PHYSICS,2009(7). |
| APA | KLOE Collaboration.(2009).A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson.JOURNAL OF HIGH ENERGY PHYSICS(7). |
| MLA | KLOE Collaboration."A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson".JOURNAL OF HIGH ENERGY PHYSICS .7(2009). |
入库方式： OAI收割
来源：高能物理研究所
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