Observation of psi(4040) and psi(4160) decay into eta J/psi
文献类型：期刊论文
| 作者 | Belle Collaboration |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2013 |
| 卷号 | 87期号:5 |
| 关键词 | CROSS-SECTION BELLE IDENTIFICATION ANNIHILATION KEKB |
| 通讯作者 | Wang, XL (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China. |
| 英文摘要 | The cross section for e(+)e(-) -> eta J=psi between root s=3.8 GeV and 5.3 GeV is measured via initial state radiation using 980 fb(-1) of data on and around the Upsilon(nS)(n=1, 2, 3, 4, 5) resonances collected with the Belle detector at KEKB. Two resonant structures at the psi(4040) and psi(4160) are observed in the (eta)J/psi invariant mass distribution. Fitting the mass spectrum with the coherent sum of two Breit-Wigner functions, one obtains B(psi(4040) -> (eta)J/psi)(.)Gamma(psi(4040))(e+e-) = (4.8 +/- 0.9 +/- 1.5) eV and B(psi(4160) -> (eta)J/psi(.)Gamma(psi(4160))(e+e-) = 4.0 +/- 0.8 +/- 1.4) eV for one solution and B(psi(4040) -> (eta)J/psi)(.)Gamma(psi(4040))(e+e-) = (11.2 +/- 1.3 +/- 2.1) eV and B(psi(4160) -> (eta)J/psi)(.)Gamma(psi(4160))(e+e-) = 13.8 +/- 1.3 +/- 2.1 eV for the other solution, where the first errors are statistical and the second are systematic. This is the first measurement of this hadronic transition mode of these two states, and the partial widths to (eta)J/psi are found to be about 1 MeV. There is no evidence for the Y(4260), Y(4360), psi(4415), or Y(4660) in the (eta)J/psi final state, and upper limits of their production rates in e(+)e(-) annihilation are determined. DOI: 10.1103/PhysRevD.87.051101 |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000316416500001 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213489]  |
| 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 | Belle Collaboration. Observation of psi(4040) and psi(4160) decay into eta J/psi[J]. PHYSICAL REVIEW D,2013,87(5). |
| APA | Belle Collaboration.(2013).Observation of psi(4040) and psi(4160) decay into eta J/psi.PHYSICAL REVIEW D,87(5). |
| MLA | Belle Collaboration."Observation of psi(4040) and psi(4160) decay into eta J/psi".PHYSICAL REVIEW D 87.5(2013). |
入库方式： OAI收割
来源：高能物理研究所
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