Measurements of the mass and width of the eta(c) meson and of an eta(c)(2S) candidate
文献类型：期刊论文
| 作者 | BaBar Collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2004 |
| 卷号 | 92期号:14 |
| 关键词 | QUANTUM CHROMODYNAMICS STATE SPECTROSCOPY ETA'(C) SEARCH LEP |
| 通讯作者 | Aubert, B (reprint author), Phys Particules Lab, F-74941 Annecy Le Vieux, France. |
| 英文摘要 | The mass m(etac) and total width Gamma(tot)(etac) of the eta(c) meson have been measured in two-photon interactions at the SLAC e(+)e(-) asymmetric B Factory with the BABAR detector. With a sample of approximately 2500 reconstructed eta(c) --> (KSK+/-)-K-0 pi(-/+) decays in 88 fb(-1) of data, the results are m(etac) = 2982.5 +/- 1.1 (stat) +/- 0.9(syst) MeV/c(2) and Gamma(tot)(etac) = 34.3 +/- 2.3(stat) +/- 0.9(syst) MeV/c(2). Using the same decay mode, a second resonance with 112 +/- 24 events is observed with a mass of 3630.8 +/- 3.4(stat) +/- 1.0(syst) MeV/c(2) and width of 17.0 +/- 8.3(stat) +/- 2.5(syst) MeV/c(2). This observation is consistent with expectations for the eta(c)(2S) state. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000221037500012 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212382]  |
| 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 | BaBar Collaboration. Measurements of the mass and width of the eta(c) meson and of an eta(c)(2S) candidate[J]. PHYSICAL REVIEW LETTERS,2004,92(14). |
| APA | BaBar Collaboration.(2004).Measurements of the mass and width of the eta(c) meson and of an eta(c)(2S) candidate.PHYSICAL REVIEW LETTERS,92(14). |
| MLA | BaBar Collaboration."Measurements of the mass and width of the eta(c) meson and of an eta(c)(2S) candidate".PHYSICAL REVIEW LETTERS 92.14(2004). |
入库方式： OAI收割
来源：高能物理研究所
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