Observation of a p(p)over-bar mass threshold enhancement in psi ' -> pi(+)pi(-)J/psi(J/psi -> gamma p(p)over-bar) decay
文献类型：期刊论文
| 作者 | BESIII Callaboration |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2010 |
| 卷号 | 34期号:4页码:421-426 |
| 关键词 | QUASI-NUCLEAR SCATTERING BARYONIUM PHYSICS |
| 通讯作者 | Ablikim, M (reprint author), CAS, Inst High Energy Phys, Beijing 100049, Peoples R China. |
| 英文摘要 | The decay channel psi' -> pi(+)pi(-)J/psi(J/psi -> gamma p (p) over bar) is studied using a sample of 1.06 x 10(8) psi' events collected by the BESIII experiment at BEPCII. A strong enhancement at threshold is observed in the pp invariant mass spectrum. The enhancement can be fitted with an S-wave Breit-Wigner resonance function with a resulting peak mass of M = 1861(-13)(+6) (stat)(-26)(+7) (syst) MeV/c(2) and a narrow width that is Gamma < 38 MeV/c(2) at the 90% confidence level. These results are consistent with published BESII results. These mass and width values do not match with well established mesons. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000276679900001 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212939]  |
| 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 | BESIII Callaboration. Observation of a p(p)over-bar mass threshold enhancement in psi ' -> pi(+)pi(-)J/psi(J/psi -> gamma p(p)over-bar) decay[J]. CHINESE PHYSICS C,2010,34(4):421-426. |
| APA | BESIII Callaboration.(2010).Observation of a p(p)over-bar mass threshold enhancement in psi ' -> pi(+)pi(-)J/psi(J/psi -> gamma p(p)over-bar) decay.CHINESE PHYSICS C,34(4),421-426. |
| MLA | BESIII Callaboration."Observation of a p(p)over-bar mass threshold enhancement in psi ' -> pi(+)pi(-)J/psi(J/psi -> gamma p(p)over-bar) decay".CHINESE PHYSICS C 34.4(2010):421-426. |
入库方式： OAI收割
来源：高能物理研究所
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