Observation of a resonance X(1835) in J/psi ->gamma pi(+)pi(-)eta(')
文献类型：期刊论文
| 作者 | BES Callaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2005 |
| 卷号 | 95期号:26 |
| 关键词 | QUASI-NUCLEAR ENHANCEMENT SCATTERING BARYONIUM PHYSICS STATE |
| 通讯作者 | Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China. |
| 英文摘要 | The decay channel J/psi ->gamma pi(+)pi(-)eta(') is analyzed using a sample of 5.8x10(7) J/psi events collected with the BESII detector. A resonance, the X(1835), is observed in the pi(+)pi(-)eta(') invariant-mass spectrum with a statistical significance of 7.7 sigma. A fit with a Breit-Wigner function yields a mass M = 1833.7 +/- 6.1(stat)+/- 2.7(syst) MeV/c(2), a width Gamma=67.7 +/- 20.3(stat)+/- 7.7(syst) MeV/c(2), and a product branching fraction B(J/psi ->gamma X)center dot B(X ->pi(+)pi(-)eta('))=[2.2 +/- 0.4(stat)+/- 0.4(syst)]x10(-4). The mass and width of the X(1835) are not compatible with any known meson resonance. Its properties are consistent with expectations for the state that produces the strong p (p) over bar mass threshold enhancement observed in the J/psi ->gamma p (p) over bar process at BESII. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000234337900029 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212632]  |
| 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. Observation of a resonance X(1835) in J/psi ->gamma pi(+)pi(-)eta(')[J]. PHYSICAL REVIEW LETTERS,2005,95(26). |
| APA | BES Callaboration.(2005).Observation of a resonance X(1835) in J/psi ->gamma pi(+)pi(-)eta(').PHYSICAL REVIEW LETTERS,95(26). |
| MLA | BES Callaboration."Observation of a resonance X(1835) in J/psi ->gamma pi(+)pi(-)eta(')".PHYSICAL REVIEW LETTERS 95.26(2005). |
入库方式： OAI收割
来源：高能物理研究所
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