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Measurements of normalized differential cross sections for t(t)over-bar production in pp collisions at root(s)=7 TeV using the ATLAS detector
ATLAS collaboration
2014
发表期刊PHYSICAL REVIEW D
卷号90期号:7
通讯作者Aad, G (reprint author), Aix Marseille Univ, CPPM, Marseille, France.
摘要Measurements of normalized differential cross sections for top-quark pair production are presented as a function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the t (t) over bar system, in proton proton collisions at a center-of-mass energy of root s = 7 TeV. The data set corresponds to an integrated luminosity of 4.6 fb(-1), recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Events are selected in the lepton jets channel, requiring exactly one lepton and at least four jets with at least one of the jets tagged as originating from a b-quark. The measured spectra are corrected for detector efficiency and resolution effects and are compared to several Monte Carlo simulations and theory calculations. The results are in fair agreement with the predictions in a wide kinematic range. Nevertheless, data distributions are softer than predicted for higher values of the mass of the t (t) over bar system and of the top-quark transverse momentum. The measurements can also discriminate among different sets of parton distribution functions.
关键词PARTON DISTRIBUTIONS ROOT-S=7 TEV FINAL-STATES LEPTON LHC
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.90.072004
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000343772600001
引用统计
被引频次:12[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/311005/213800
专题实验物理中心
作者单位中国科学院高能物理研究所
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ATLAS collaboration. Measurements of normalized differential cross sections for t(t)over-bar production in pp collisions at root(s)=7 TeV using the ATLAS detector[J]. PHYSICAL REVIEW D,2014,90(7).
APA ATLAS collaboration.(2014).Measurements of normalized differential cross sections for t(t)over-bar production in pp collisions at root(s)=7 TeV using the ATLAS detector.PHYSICAL REVIEW D,90(7).
MLA ATLAS collaboration."Measurements of normalized differential cross sections for t(t)over-bar production in pp collisions at root(s)=7 TeV using the ATLAS detector".PHYSICAL REVIEW D 90.7(2014).
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