| Measurement of the t(t)over-barW and t(t)over-barZ production cross sections in pp collisions at root s=8 TeV with the ATLAS detector |
| ATLAS Collaboration
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| 2015
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发表期刊 | JOURNAL OF HIGH ENERGY PHYSICS
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卷号 | 2015期号:11页码:172 |
摘要 | The production cross sections of top-quark pairs in association with massive vector bosons have been measured using data from pp collisions at root s = 8 TeV. The dataset corresponds to an integrated luminosity of 20.3 fb(-1) collected by the ATLAS detector in 2012 at the LHC. Final states with two, three or four leptons are considered. A fit to the data considering the t (t) over barW and t (t) over barZ processes simultaneously yields a significance of 5.0 sigma (4.2 sigma) over the background-only hypothesis for t (t) over barW (t (t) over barZ) production. The measured cross sections are sigma(t (t) over barW) = 369(-91)(+100) fb and sigma(t (t) over barZ) = 176(-52)(+58) fb. The background-only hypothesis with neither t (t) over barW nor t (t) over barZ production is excluded at 7.1 sigma. All measurements are consistent with next-to-leading-order calculations for the t (t) over barW and t (t) over barZ processes. |
文章类型 | Article
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关键词 | Electroweak interaction
Hadron-Hadron scattering
Top physics
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学科领域 | Physics
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DOI | 10.1007/JHEP11(2015)172
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收录类别 | SCI
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WOS类目 | Physics, Particles & Fields
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WOS记录号 | WOS:000366139900001
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ihep.ac.cn/handle/311005/229086
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专题 | 实验物理中心
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推荐引用方式 GB/T 7714 |
ATLAS Collaboration. Measurement of the t(t)over-barW and t(t)over-barZ production cross sections in pp collisions at root s=8 TeV with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(11):172.
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APA |
ATLAS Collaboration.(2015).Measurement of the t(t)over-barW and t(t)over-barZ production cross sections in pp collisions at root s=8 TeV with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS,2015(11),172.
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MLA |
ATLAS Collaboration."Measurement of the t(t)over-barW and t(t)over-barZ production cross sections in pp collisions at root s=8 TeV with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS 2015.11(2015):172.
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