Observation of Y(2175) in J/psi ->eta phi f(0)(980)
文献类型：期刊论文
| 作者 | BES Collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2008 |
| 卷号 | 100期号:10页码:102003 |
| 英文摘要 | The decays of J/psi ->eta phi f(0)(980)[eta ->gamma gamma, phi -> K+K-, f(0)(980)->pi(+)pi(-)] are analyzed using a sample of 5.8x10(7) J/psi events collected with the BESII detector at the Beijing Electron-Positron Collider. A structure at around 2.18 GeV/c(2) with about 5 sigma significance is observed in the phi f(0)(980) invariant mass spectrum. A fit with a Breit-Wigner function gives the peak mass and width of m=2.186 +/- 0.010(stat)+/- 0.006(syst) GeV/c(2) and Gamma=0.065 +/- 0.023(stat)+/- 0.017(syst) GeV/c(2), respectively, which are consistent with those of Y(2175), observed by the BABAR Collaboration in the initial-state radiation process e(+)e(-)->gamma(ISR)phi f(0)(980). The production branching ratio is determined to be Br(J/psi ->eta Y(2175))Br(Y(2175)->phi f(0)(980))Br(f(0)(980)->pi(+)pi(-))=[3.23 +/- 0.75(stat)+/- 0.73(syst)]x 10(-4), assuming that the Y(2175) is a 1(--) state. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| WOS记录号 | WOS:000254024500014 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/227955]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 推荐引用方式 GB/T 7714 | BES Collaboration. Observation of Y(2175) in J/psi ->eta phi f(0)(980)[J]. PHYSICAL REVIEW LETTERS,2008,100(10):102003. |
| APA | BES Collaboration.(2008).Observation of Y(2175) in J/psi ->eta phi f(0)(980).PHYSICAL REVIEW LETTERS,100(10),102003. |
| MLA | BES Collaboration."Observation of Y(2175) in J/psi ->eta phi f(0)(980)".PHYSICAL REVIEW LETTERS 100.10(2008):102003. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。