Observation of a resonance x(1835) in j/psi ->gamma pi(+)pi(-)eta(')
文献类型：期刊论文
| 作者 | Ablikim, M; Bai, JZ; Ban, Y; Bian, JG; Cai, X; Chen, HF; Chen, HS; Chen, HX; Chen, JC; Chen, J |
| 刊名 | Physical review letters
 |
| 出版日期 | 2005-12-31 |
| 卷号 | 95期号:26页码:5 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.95.262001 |
| 通讯作者 | Ablikim, m() |
| 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. |
| WOS关键词 | QUASI-NUCLEAR ; ENHANCEMENT ; SCATTERING ; BARYONIUM ; PHYSICS ; STATE |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000234337900029 |
| 出版者 | AMERICAN PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175782 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Ablikim, M |
| 作者单位 | 1.Inst High Energy Phys, Beijing 100049, Peoples R China 2.CCAST, Beijing 100080, Peoples R China 3.Guangxi Normal Univ, Guilin 541004, Peoples R China 4.Guangxi Univ, Nanning 530004, Peoples R China 5.Henan Normal Univ, Xinxiang 453002, Peoples R China 6.Huazhong Normal Univ, Wuhan 430079, Peoples R China 7.Hunan Univ, Changsha 410082, Peoples R China 8.Liaoning Univ, Shenyang 110036, Peoples R China 9.Nanjing Normal Univ, Nanjing 210097, Peoples R China 10.Nankai Univ, Tianjin 300071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ablikim, M,Bai, JZ,Ban, Y,et al. Observation of a resonance x(1835) in j/psi ->gamma pi(+)pi(-)eta(')[J]. Physical review letters,2005,95(26):5. |
| APA | Ablikim, M.,Bai, JZ.,Ban, Y.,Bian, JG.,Cai, X.,...&Zou, BS.(2005).Observation of a resonance x(1835) in j/psi ->gamma pi(+)pi(-)eta(').Physical review letters,95(26),5. |
| MLA | Ablikim, M,et al."Observation of a resonance x(1835) in j/psi ->gamma pi(+)pi(-)eta(')".Physical review letters 95.26(2005):5. |
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来源：高能物理研究所
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