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Determination of the top-quark pole mass using t t ¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions
ATLAS Collaboration
2015
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
卷号2015期号:10页码:121
文章类型Article
摘要The normalized differential cross section for top-quark pair production in association with at least one jet is studied as a function of the inverse of the invariant mass of the t (t) over bar + 1-jet system. This distribution can be used for a precise determination of the top-quark mass since gluon radiation depends on the mass of the quarks. The experimental analysis is based on proton-proton collision data collected by the ATLAS detector at the LHC with a centre-of-mass energy of 7TeV corresponding to an integrated luminosity of 4.6 fb(-1). The selected events were identified using the lepton+jets top-quark-pair decay channel, where lepton refers to either an electron or a muon. The observed distribution is compared to a theoretical prediction at next-to-leading-order accuracy in quantum chromodynamics using the pole-mass scheme. With this method, the measured value of the top-quark pole mass, m(t)(pole), is: m(t)(pole) t = 173.7 +/- 1.5 (stat.) +/- 1.4 (syst.)(-0.5)(+1.0) (theory) GeV. This result represents the most precise measurement of the top-quark pole mass to date.
关键词Hadron-Hadron Scattering Top physics
学科领域Physics
DOI10.1007/JHEP10(2015)121
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000363476900001
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被引频次:13[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/311005/228973
专题实验物理中心
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ATLAS Collaboration. Determination of the top-quark pole mass using t t ¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(10):121.
APA ATLAS Collaboration.(2015).Determination of the top-quark pole mass using t t ¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions.JOURNAL OF HIGH ENERGY PHYSICS,2015(10),121.
MLA ATLAS Collaboration."Determination of the top-quark pole mass using t t ¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions".JOURNAL OF HIGH ENERGY PHYSICS 2015.10(2015):121.
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