Search for s-channel single top-quark production in proton-proton collisions at root s=8 TeV with the ATLAS detector
文献类型：期刊论文
| 作者 | ATLAS Collaboration |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2015 |
| 卷号 | 740页码:118-136 |
| 关键词 | ATLAS Top quark Electroweak production s-Channel |
| 英文摘要 | This Letter presents a search at the LHC for s-channel single top-quark production in proton-proton collisions at a centre-of-mass energy of 8 TeV. The analyzed data set was recorded by the ATLAS detector and corresponds to an integrated luminosity of 20.3 fb(-1). Selected events contain one charged lepton, large missing transverse momentum and exactly two b-tagged jets. A multivariate event classifier based on boosted decision trees is developed to discriminate s-channel single top-quark events from the main background contributions. The signal extraction is based on a binned maximum-likelihood fit of the output classifier distribution. The analysis leads to an upper limit on the s-channel single topquark production cross-section of 14.6 pb at the 95% confidence level. The fit gives a cross-section of sigma(s) = 5.0 +/- 4.3 pb, consistent with the Standard Model expectation. (C) 2014 The Authors. Published by Elsevier B.V. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 收录类别 | SCI |
| WOS记录号 | WOS:000347046200017 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228159]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 推荐引用方式 GB/T 7714 | ATLAS Collaboration. Search for s-channel single top-quark production in proton-proton collisions at root s=8 TeV with the ATLAS detector[J]. PHYSICS LETTERS B,2015,740:118-136. |
| APA | ATLAS Collaboration.(2015).Search for s-channel single top-quark production in proton-proton collisions at root s=8 TeV with the ATLAS detector.PHYSICS LETTERS B,740,118-136. |
| MLA | ATLAS Collaboration."Search for s-channel single top-quark production in proton-proton collisions at root s=8 TeV with the ATLAS detector".PHYSICS LETTERS B 740(2015):118-136. |
入库方式： OAI收割
来源：高能物理研究所
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