Measurement of Gamma(phi ->eta 'gamma)/Gamma(phi ->eta gamma) and the pseudoscalar mixing angle
文献类型：期刊论文
| 作者 | KLOE Collaboration |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2002 |
| 卷号 | 541期号:1-2页码:#REF! |
| 关键词 | e(+)e(-) collisions phi radiative decays pseudoscalar mixing angle |
| 通讯作者 | Ambrosino, F (reprint author), Univ Naples Federico II, Dipartimento Sci Fis, Naples, Italy. |
| 英文摘要 | We have measured the radiative decays phi --> etagamma, phi --> eta'gamma selecting pi(+)pi(-)gammagammagamma final state in a sample of similar to 5 x 10(7) phi-mesons produced at the Frascati phi-factory DAPhiNE. We obtain Gamma(phi --> eta'gamma)/Gamma(phi --> etagamma) = (4.70 +/- 0.47 +/- 0.31) x 10(-3). From this result we derive new accurate values for the branching ratio BR(phi --> eta'gamma) = (6.10 +/- 0.61 +/- 0.43) x 10(-5) and the mixing angle of pseudoscalar mesons in the flavour basis phi(P) = (41.8(-1.6)(+1.9))degrees. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| WOS记录号 | WOS:000177500700007 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225710]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 推荐引用方式 GB/T 7714 | KLOE Collaboration. Measurement of Gamma(phi ->eta 'gamma)/Gamma(phi ->eta gamma) and the pseudoscalar mixing angle[J]. PHYSICS LETTERS B,2002,541(1-2):#REF!. |
| APA | KLOE Collaboration.(2002).Measurement of Gamma(phi ->eta 'gamma)/Gamma(phi ->eta gamma) and the pseudoscalar mixing angle.PHYSICS LETTERS B,541(1-2),#REF!. |
| MLA | KLOE Collaboration."Measurement of Gamma(phi ->eta 'gamma)/Gamma(phi ->eta gamma) and the pseudoscalar mixing angle".PHYSICS LETTERS B 541.1-2(2002):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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