Search for decays of stopped long-lived particles produced in proton-proton collisions at root s=8TeV
文献类型：期刊论文
| 作者 | CMS Collaboration |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2015 |
| 卷号 | 75期号:4页码:151 |
| 英文摘要 | A search has been performed for long-lived particles that could have come to rest within the CMS detector, using the time intervals between LHC beam crossings. The existence of such particles could be deduced from observation of their decays via energy deposits in the CMS calorimeter appearing at times that are well separated from any proton-proton collisions. Using a data set corresponding to an integrated luminosity of 18.6 fb(-1) of 8 TeV proton-proton collisions, and a search interval corresponding to 281 h of trigger livetime, 10 events are observed, with a background prediction of 13.2(-2.5)(+3.6) events. Limits are presented at 95 % confidence level on gluino and top squark production, for over 13 orders of magnitude in the mean proper lifetime of the stopped particle. Assuming a cloud model of R-hadron interactions, a gluino with mass less than or similar to 1000 GeV and a top squark with mass less than or similar to 525 GeV are excluded, for lifetimes between 1 mu s and 1000 s. These results are the most stringent constraints on stopped particles to date. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Particles & Fields |
| 收录类别 | SCI |
| WOS记录号 | WOS:000355670100001 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228448]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | CMS Collaboration. Search for decays of stopped long-lived particles produced in proton-proton collisions at root s=8TeV[J]. EUROPEAN PHYSICAL JOURNAL C,2015,75(4):151. |
| APA | CMS Collaboration.(2015).Search for decays of stopped long-lived particles produced in proton-proton collisions at root s=8TeV.EUROPEAN PHYSICAL JOURNAL C,75(4),151. |
| MLA | CMS Collaboration."Search for decays of stopped long-lived particles produced in proton-proton collisions at root s=8TeV".EUROPEAN PHYSICAL JOURNAL C 75.4(2015):151. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。