Search for anomalous t(t)over-bar production in the highly-boosted all-hadronic final state
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 | 9 |
| 关键词 | SYMMETRY-BREAKING TOPCOLOR HIERARCHY PHYSICS |
| 通讯作者 | Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia. |
| 英文摘要 | A search is presented for a massive particle, generically referred to as a Z', decaying into a t (t) over bar pair. The search focuses on Z' resonances that are sufficiently massive to produce highly Lorentz-boosted top quarks, which yield collimated decay products that are partially or fully merged into single jets. The analysis uses new methods to analyze jet substructure, providing suppression of the non-top multijet backgrounds. The analysis is based on a data sample of proton-proton collisions at a center-of-mass energy of 7TeV, corresponding to an integrated luminosity of 5 fb(-1). Upper limits in the range of 1 pb are set on the product of the production cross section and branching fraction for a topcolor Z' modeled for several widths, as well as for a Randall-Sundrum Kaluza-Klein gluon. In addition, the result contrain any enhancement in t (t) over bar production beyond expectations of the standard mode for tt invariant mass larger than 1TeV/c(2). |
| 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:000310341300042 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213372]  |
| 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 anomalous t(t)over-bar production in the highly-boosted all-hadronic final state[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(9). |
| APA | CMS Collaboration.(2012).Search for anomalous t(t)over-bar production in the highly-boosted all-hadronic final state.JOURNAL OF HIGH ENERGY PHYSICS(9). |
| MLA | CMS Collaboration."Search for anomalous t(t)over-bar production in the highly-boosted all-hadronic final state".JOURNAL OF HIGH ENERGY PHYSICS .9(2012). |
入库方式： OAI收割
来源：高能物理研究所
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