Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector
文献类型：期刊论文
| 作者 | ATLAS Collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2014 |
| 卷号 | 113期号:21 |
| 关键词 | B-C MESON SPECTROSCOPY EQUATION |
| 通讯作者 | Aad, G (reprint author), Aix Marseille Univ, CPPM, Marseille, France. |
| 英文摘要 | A search for excited states of the B-c(+/-) meson is performed using 4.9 fb(-1) of 7 TeV and 19.2 fb(-1) of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decayB(c)(+/-) -> J/psi pi(+/-). The state appears in the m(B-c(+/-)pi(+)pi(-)) - m(B-c(+/-)) - 2m(pi(+/-)) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842 +/- 4 +/- 5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the B-c(+/-) meson, B-c(+/-)(2S). |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000345745800002 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213824]  |
| 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 | ATLAS Collaboration. Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector[J]. PHYSICAL REVIEW LETTERS,2014,113(21). |
| APA | ATLAS Collaboration.(2014).Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector.PHYSICAL REVIEW LETTERS,113(21). |
| MLA | ATLAS Collaboration."Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector".PHYSICAL REVIEW LETTERS 113.21(2014). |
入库方式： OAI收割
来源：高能物理研究所
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