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Search for s-channel single top-quark production in proton-proton collisions at root s=8 TeV with the ATLAS detector
ATLAS Collaboration
2015
发表期刊PHYSICS LETTERS B
卷号740页码:118-136
文章类型Article
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.
关键词ATLAS Top quark Electroweak production s-Channel
学科领域Astronomy & Astrophysics; Physics
DOI10.1016/j.physletb.2014.11.042
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000347046200017
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228159
专题实验物理中心
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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.
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