Partial wave analyses of J/psi ->gamma pi(+)pi(-) and gamma pi(0)pi(0)
文献类型：期刊论文
| 作者 | BES Callaboration |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2006 |
| 卷号 | 642期号:5--6页码:441-448 |
| 关键词 | RADIATIVE DECAY J/PSI POLARIZATION K+K PSI |
| 通讯作者 | Zhu, YC (reprint author), DESY, D-22607 Hamburg, Germany. |
| 英文摘要 | Results are presented on J/psi radiative decays to pi(+)pi(-) and pi(0)pi(0) based on a sample of 58M J/psi events taken with the BES II detector. Partial wave analyses are carried out using the relativistic covariant tensor amplitude method in the 1.0 to 2.3 GeV/c(2) pi pi mass range. There are conspicuous peaks due to the f(2)(1270) and two 0(++) states in the 1.45 and 1.75 GeV/c(2) mass regions. The first 0(++) state has a mass of 1466 +/- 6 +/- 20 MeV/c(2), a width of 108(-11)(+14) +/- 25 MeV/c(2), and a branching fraction B(J/psi -> gamma f(0)(1500) -> gamma pi(+)pi(-)) = (0.67 +/- 0.02 +/- 0.30) x 10(-4). Spin 0 is strongly preferred over spin 2. The second 0(++) state peaks at 1765(-3)(+4) +/- 13 MeV/c(2) with a width of 145 +/- 8 +/- 69 MeV/c(2). If this 0(++) is interpreted as coming from f(0)(1710), the ratio of its branching fractions to pi pi and K (K) over bar is 0.41(-0.17)(+0.11). (c) 2006 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000242503500005 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212754]  |
| 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 | BES Callaboration. Partial wave analyses of J/psi ->gamma pi(+)pi(-) and gamma pi(0)pi(0)[J]. PHYSICS LETTERS B,2006,642(5--6):441-448. |
| APA | BES Callaboration.(2006).Partial wave analyses of J/psi ->gamma pi(+)pi(-) and gamma pi(0)pi(0).PHYSICS LETTERS B,642(5--6),441-448. |
| MLA | BES Callaboration."Partial wave analyses of J/psi ->gamma pi(+)pi(-) and gamma pi(0)pi(0)".PHYSICS LETTERS B 642.5--6(2006):441-448. |
入库方式： OAI收割
来源：高能物理研究所
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