Observation of a structure at 1.84 GeV/c(2) in the 3(pi(+)pi(-)) mass spectrum in J/psi -> gamma 3(pi(+) pi(-)) decays
文献类型：期刊论文
| 作者 | BESIII Callaboration |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2013 |
| 卷号 | 88期号:9 |
| 关键词 | BARYONIUM GLUEBALL X(1835) STATE QCD |
| 通讯作者 | Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China. |
| 英文摘要 | With a sample of 225.3 x 10(6) J/psi events taken with the BESIII detector, the decay J/psi -> gamma 3(pi(+) pi(-)) is analyzed. A structure at 1.84 GeV/c(2) is observed in the 3(pi(+) pi(-)) invariant mass spectrum with a statistical significance of 7.6 sigma. The mass and width are measured to be M = 1842.2 +/- 4.2(-2.6)(+7.1) MeV/c(2) and Gamma = 83 +/- 14 +/- 11 MeV. The product branching fraction is determined to be B(J/psi -> gamma X(1840) x B(X(1840) -> 3(pi(+)pi(-))) = (2.44 +/- 0.36(-0.74)(+0.60)) x 10(-5). No eta' signals are observed in the 3(pi(+) pi(-)) invariant mass spectrum, and the upper limit of the branching fraction for the decay eta' -> 3(pi(+) pi(-)) is set to be 3.1 x 10(-5) at a 90% confidence level. |
| 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:000327209200002 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213624]  |
| 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 | BESIII Callaboration. Observation of a structure at 1.84 GeV/c(2) in the 3(pi(+)pi(-)) mass spectrum in J/psi -> gamma 3(pi(+) pi(-)) decays[J]. PHYSICAL REVIEW D,2013,88(9). |
| APA | BESIII Callaboration.(2013).Observation of a structure at 1.84 GeV/c(2) in the 3(pi(+)pi(-)) mass spectrum in J/psi -> gamma 3(pi(+) pi(-)) decays.PHYSICAL REVIEW D,88(9). |
| MLA | BESIII Callaboration."Observation of a structure at 1.84 GeV/c(2) in the 3(pi(+)pi(-)) mass spectrum in J/psi -> gamma 3(pi(+) pi(-)) decays".PHYSICAL REVIEW D 88.9(2013). |
入库方式： OAI收割
来源：高能物理研究所
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