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Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at root s=7 TeV
ATLAS Collaboration
2015
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号75期号:4页码:158
文章类型Article
摘要The mass of the top quark is measured in a data set corresponding to 4.6 fb(-1) of proton-proton collisions with centre-of-mass energy root s = 7 TeV collected by the ATLAS detector at the LHC. Events consistent with hadronic decays of top-antitop quark pairs with at least six jets in the final state are selected. The substantial background from multijet production is modelled with data-driven methods that utilise the number of identified b-quark jets and the transverse momentum of the sixth leading jet, which have minimal correlation. The top-quark mass is obtained from template fits to the ratio of three-jet to dijet mass. The three-jet mass is calculated from the three jets produced in a top-quark decay. Using these three jets the dijet mass is obtained from the two jets produced in the W boson decay. The top-quark mass obtained from this fit is thus less sensitive to the uncertainty in the energy measurement of the jets. A binned likelihood fit yields a top-quark mass of m(t) = 175.1 +/- 1.4 (stat.) +/- 1.2 (syst.) GeV.
学科领域Physics
DOI10.1140/epjc/s10052-015-3373-1
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000355671300001
引用统计
被引频次:3[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/311005/228447
专题实验物理中心
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ATLAS Collaboration. Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at root s=7 TeV[J]. EUROPEAN PHYSICAL JOURNAL C,2015,75(4):158.
APA ATLAS Collaboration.(2015).Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at root s=7 TeV.EUROPEAN PHYSICAL JOURNAL C,75(4),158.
MLA ATLAS Collaboration."Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at root s=7 TeV".EUROPEAN PHYSICAL JOURNAL C 75.4(2015):158.
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