Search for stopped long-lived particles produced in pp collisions at root s=7 TeV
文献类型：期刊论文
| 作者 | CMS Collaboration |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2012 |
| 期号 | 8 |
| 关键词 | CHARGED-PARTICLES GLUINO PRODUCTION HADRON COLLIDERS ATLAS DETECTOR SUPERSYMMETRY SQUARK DECAYS |
| 通讯作者 | Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia. |
| 英文摘要 | A search has been performed for long-lived particles that have stopped in the CMS detector, during 7TeV proton-proton operations of the CERN LHC. The existence of such particles could be inferred from observation of their decays when there were no proton-proton collisions in the CMS detector, namely during gaps between LHC beam crossings. Using a data set in which CMS recorded an integrated luminosity of 4.0 fb(-1), and a search interval corresponding to 246 hours of trigger live time, 12 events are observed, with a mean background prediction of 8.6 +/- 2.4 events. Limits are presented at 95% confidence level on long-lived gluino and stop production, over 13 orders of magnitude of particle lifetime. Assuming the "cloud model" of R-hadron interactions, a gluino with mass below 640 GeV and a stop with mass below 340 GeV are excluded, for lifetimes between 10 mu s and 1000s. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000309883600059 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213352]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 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 | CMS Collaboration. Search for stopped long-lived particles produced in pp collisions at root s=7 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(8). |
| APA | CMS Collaboration.(2012).Search for stopped long-lived particles produced in pp collisions at root s=7 TeV.JOURNAL OF HIGH ENERGY PHYSICS(8). |
| MLA | CMS Collaboration."Search for stopped long-lived particles produced in pp collisions at root s=7 TeV".JOURNAL OF HIGH ENERGY PHYSICS .8(2012). |
入库方式： OAI收割
来源：高能物理研究所
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