Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860)
文献类型：期刊论文
| 作者 | Chen, Dian-Yong1,2,3; He, Jun1,2,3; Li, Xue-Qian5; Liu, Xiang1,2,4 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2011-10-04 |
| 卷号 | 84 |
| ISSN号 | 1550-7998 |
| DOI | 10.1103/PhysRevD.84.074006 |
| 英文摘要 | Considering the defects of the previous work for estimating the anomalous production rates of e(+)e(-) -> Upsilon(1S)pi(+)pi(-), Upsilon(2S)pi(+)pi(-) near the peak of the Upsilon(5S) resonance at root s = 10.87 GeV [K. F. Chen et al. (Belle Collaboration), Phys. Rev. Lett. 100, 112001 (2008)], we suggest a new scenario where the contributions from the direct dipion transition and the final-state interactions interfere to result in not only the anomalously large production rates, but also line shapes of the differential widths consistent with experimental measurement when assuming the reactions are due to the dipion emission of Upsilon(5S). At the end, we raise a new puzzle that the predicted differential width d Gamma(Upsilon(5S) -> Upsilon(2S)pi(+)pi(-))/d cos0 has a discrepant trend from the data while other predictions are well in accord with the data. It should be further clarified by more accurate measurements carried by future experiments. |
| WOS关键词 | DECAY |
| 资助项目 | Ministry of Education of China (FANEDD, DPFIHE, NCET)[200924] ; Ministry of Education of China (FANEDD, DPFIHE, NCET)[20090211120029] ; Ministry of Education of China (FANEDD, DPFIHE, NCET)[NCET-10-0442] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000295541400005 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://119.78.100.186/handle/113462/56758]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Liu, Xiang |
| 作者单位 | 1.Lanzhou Univ, Res Ctr Hadron, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, CSR Phys, Lanzhou 730000, Peoples R China 3.Inst Modern Phys CAS, Nucl Theory Grp, Lanzhou 730000, Peoples R China 4.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China 5.Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Dian-Yong,He, Jun,Li, Xue-Qian,et al. Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860)[J]. PHYSICAL REVIEW D,2011,84. |
| APA | Chen, Dian-Yong,He, Jun,Li, Xue-Qian,&Liu, Xiang.(2011).Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860).PHYSICAL REVIEW D,84. |
| MLA | Chen, Dian-Yong,et al."Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860)".PHYSICAL REVIEW D 84(2011). |
入库方式： OAI收割
来源：近代物理研究所
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