Ratio of hadronic decay rates of J/psi and psi(2S) and the rho pi puzzle
文献类型：期刊论文
| 作者 | Gu YF(顾以藩); GGu, YF; Li, XH
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2001 |
| 卷号 | 63期号:11页码:114019 |
| 通讯作者 | Inst High Energy Phys, Beijing 100039, Peoples R China ; Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA |
| 英文摘要 | The so-called rho pi puzzle of J/psi, and psi (2S) decays is examined using the experimental data available to date. Two different approaches were taken to estimate the ratio of J/psi and psi (2S) hadronic decay rates. While one of the estimates could not yield the exact ratio of psi (2S) to J/psi inclusive hadronic decay rates, the other, based on a computation of the inclusive ggg decay rate for psi (2S)(J/psi) by subtracting other decay rates from the total decay rate, differs by two standard deviations from the naive prediction of perturbative QCD, even though its central value is nearly twice as large as what was naively expected. A comparison between this ratio, upon making corrections for specific exclusive two-body decay modes, and the corresponding experimental data confirms the puzzles in J/psi and psi (2S) decays. We find from our analysis that the exclusively reconstructed hadronic decays of the psi (2S) account for only a small fraction of its total decays, and a ratio exceeding the above estimate should be expected to occur for a considerable number of the remaining decay channels. We also show that the recent new results from the BES experiment provide crucial tests of various theoretical models proposed to explain the puzzle. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 研究领域[WOS] | Astronomy & Astrophysics ; Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000169031600045 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/240948]  |
| 专题 | 高能物理研究所_实验物理中心 高能物理研究所_核技术应用研究中心 |
| 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 | Gu YF,GGu, YF,Li, XH. Ratio of hadronic decay rates of J/psi and psi(2S) and the rho pi puzzle[J]. PHYSICAL REVIEW D,2001,63(11):114019. |
| APA | 顾以藩,GGu, YF,&Li, XH.(2001).Ratio of hadronic decay rates of J/psi and psi(2S) and the rho pi puzzle.PHYSICAL REVIEW D,63(11),114019. |
| MLA | 顾以藩,et al."Ratio of hadronic decay rates of J/psi and psi(2S) and the rho pi puzzle".PHYSICAL REVIEW D 63.11(2001):114019. |
入库方式： OAI收割
来源：高能物理研究所
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