eta, eta ' studies with the KLOE detector at DA Phi NE
文献类型：期刊论文
| 作者 | KLOE Collaboration |
| 刊名 | PHYSICA SCRIPTA
 |
| 出版日期 | 2002 |
| 卷号 | T99页码:123-132 |
| 关键词 | ETA-ETA' MIXING ANGLE MESONS DECAY PHI->ETA'GAMMA |
| 通讯作者 | Aloisio, A (reprint author), Univ Naples, Dipartimento Sci Fis, Mostra Oltremare Pad 19, Naples, Italy. |
| 英文摘要 | The KLOE detector is operational since spring '99 at DAPhiNE, the Frascati e(+)e(-) collider, a phi-factory running at 1.02 GeVc.m. energy. This detector has been designed and built with the primary goal of measuring Re(epsilon'/epsilon), the CP violation parameter in the kaon system, with a sensitivity of about one part in ten thousands. Apart from CP studies in the kaon system. KLOE has a rich scientific program that can be exploited with an integrated luminosity not far from the one which has already been collected, namely the study of phi decays into scalar and pseudoscalar mesons, the measurement of the hadronic cross-section up to I GeV rare kaon decays, phi decays into three pions. Since the detector installation there have been three periods of stable data taking and a total amount of similar to200 pb(-1) has been collected by end of 2001, corresponding to similar to6.7 . 10(8) phi mesons and to -8.7 . 10(6) eta mesons., being BR(phi --> etagamma) = (1.297 +/- 0.033) . 10(-2). We present the results obtained, for a data sample of 17 pb(-1) collected in the year 2000, for phi --> etagamma and phi --> eta'gamma: the ratio of these two BR's has been measured to be (5.3 +/- 0.5 +/- 0.4) . 10(-3), leading to a very accurate determination of the mixing angle in the flavor basis phi(p) = (40(-1.5)(+1.7))degrees and to the most accurate determination of BR(phi --> eta'gamma) to date: (6.8 +/- 0.6 +/- 0.5) . 10(-5). From the ratio BR(phi --> etagamma)/BR(phi --> pi(0)gamma) we have extracted the value BR(phi --> pi(0)y) = (1.377 +/- 0.007 +/- 0.05) . 10(-3). |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000177162400014 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212220]  |
| 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. eta, eta ' studies with the KLOE detector at DA Phi NE[J]. PHYSICA SCRIPTA,2002,T99:123-132. |
| APA | KLOE Collaboration.(2002).eta, eta ' studies with the KLOE detector at DA Phi NE.PHYSICA SCRIPTA,T99,123-132. |
| MLA | KLOE Collaboration."eta, eta ' studies with the KLOE detector at DA Phi NE".PHYSICA SCRIPTA T99(2002):123-132. |
入库方式： OAI收割
来源：高能物理研究所
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