中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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