Observation of the Y(4230) and a new structure in e(+)e(-) -> K+ K- J/psi
文献类型：期刊论文
| ; | |
| 作者 | BESIII Collaboration |
| 刊名 | CHINESE PHYSICS C
 ; CHINESE PHYSICS C
|
| 出版日期 | 2022 ; 2022 |
| 卷号 | 46期号:11页码:111002 |
| ISSN号 | 1674-1137 ; 1674-1137 |
| 关键词 | Y states Y states charmonium-like states BESIII charmonium-like states BESIII |
| DOI | 10.1088/1674-1137/ac945c ; 10.1088/1674-1137/ac945c |
| 文献子类 | Article ; Article |
| 英文摘要 | The cross sections of e(+)e(-) -> K+K- J/psi at center-of-mass energies from 4.127 to 4.600 GeV are measured based on 15.6 fb(-1) data collected with the BESIII detector operating at the BEPCII storage ring. Two resonant structures are observed in the line shape of the cross sections. The mass and width of the first structure are measured to be (4225.3 +/- 2.3 +/- 21.5) MeV and (72.9 +/- 6.1 +/- 30.8) MeV, respectively. They are consistent with those of the established Y(4230). The second structure is observed for the first time with a statistical significance greater than 8 sigma, denoted as Y(4500). Its mass and width are determined to be (4484.7 +/- 13.3 +/- 24.1) MeV and (111.1 +/- 30.1 +/- 15.2) MeV, respectively. The first presented uncertainties are statistical and the second ones are systematic. The product of the electronic partial width with the decay branching fraction Gamma(Y(4230) -> e(+)e(-))B(Y(4230) -> K+ K- J/psi) is reported.; The cross sections of e(+)e(-) -> K+K- J/psi at center-of-mass energies from 4.127 to 4.600 GeV are measured based on 15.6 fb(-1) data collected with the BESIII detector operating at the BEPCII storage ring. Two resonant structures are observed in the line shape of the cross sections. The mass and width of the first structure are measured to be (4225.3 +/- 2.3 +/- 21.5) MeV and (72.9 +/- 6.1 +/- 30.8) MeV, respectively. They are consistent with those of the established Y(4230). The second structure is observed for the first time with a statistical significance greater than 8 sigma, denoted as Y(4500). Its mass and width are determined to be (4484.7 +/- 13.3 +/- 24.1) MeV and (111.1 +/- 30.1 +/- 15.2) MeV, respectively. The first presented uncertainties are statistical and the second ones are systematic. The product of the electronic partial width with the decay branching fraction Gamma(Y(4230) -> e(+)e(-))B(Y(4230) -> K+ K- J/psi) is reported. |
| 电子版国际标准刊号 | 2058-6132 ; 2058-6132 |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000876710100001 ; WOS:000876710100001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/298820]  |
| 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 Collaboration. Observation of the Y(4230) and a new structure in e(+)e(-) -> K+ K- J/psi, Observation of the Y(4230) and a new structure in e(+)e(-) -> K+ K- J/psi[J]. CHINESE PHYSICS C, CHINESE PHYSICS C,2022, 2022,46, 46(11):111002, 111002. |
| APA | BESIII Collaboration.(2022).Observation of the Y(4230) and a new structure in e(+)e(-) -> K+ K- J/psi.CHINESE PHYSICS C,46(11),111002. |
| MLA | BESIII Collaboration."Observation of the Y(4230) and a new structure in e(+)e(-) -> K+ K- J/psi".CHINESE PHYSICS C 46.11(2022):111002. |
入库方式： OAI收割
来源：高能物理研究所
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