Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector
ATLAS Collaboration
刊名PHYSICS LETTERS B
2015
卷号749页码:519-541
学科分类Astronomy & Astrophysics; Physics
DOI10.1016/j.physletb.2015.07.079
文章类型Article
英文摘要A search for the associated production of the Higgs boson with a top quark pair is performed in multilepton final states using 20.3 fb(-1) of proton-proton collision data recorded by the ATLAS experiment at root s = 8 TeVat the Large Hadron Collider. Five final states, targeting the decays H -> WW*, tau tau, and ZZ*, are examined for the presence of the Standard Model (SM) Higgs boson: two same-charge light leptons (e or mu) without a hadronically decaying tau lepton; three light leptons; two same-charge light leptons with a hadronically decaying tau lepton; four light leptons; and one light lepton and two hadronically decaying tau leptons. No significant excess of events is observed above the background expectation. The best fit for the t (t) over barH production cross section, assuming a Higgs boson mass of 125 GeV, is 2.1(-1.2)(+1.4) times the SM expectation, and the observed (expected) upper limit at the 95% confidence level is 4.7 (2.4) times the SM rate. The p-value for compatibility with the background-only hypothesis is 1.8s; the expectation in the presence of a Standard Model signal is 0.9 sigma. (C) 2015 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V.
类目[WOS]Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
收录类别SCI
WOS记录号WOS:000361562900076
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被引频次:41[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/311005/229021
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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ATLAS Collaboration. Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector[J]. PHYSICS LETTERS B,2015,749:519-541.
APA ATLAS Collaboration.(2015).Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector.PHYSICS LETTERS B,749,519-541.
MLA ATLAS Collaboration."Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector".PHYSICS LETTERS B 749(2015):519-541.
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