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Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV
CMS Collaboration
2014
发表期刊PHYSICS LETTERS B
卷号728页码:496-517
通讯作者Chatrchyan, S (reprint author), CERN, CH-1211 Geneva 23, Switzerland.
摘要The inclusive cross section for top-quark pair production measured by the CMS experiment in protonproton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, m(t)(pole), or the strong coupling constant, alpha(S). With the parton distribution function set NNPDF2.3, a pole mass of 176.7(-3.4)(+3.8) GeV is obtained when constraining alpha(S) at the scale of the Z boson mass, m(Z), to the current world average. Alternatively, by constraining m(t)(pole) to the latest average from direct mass measurements, a value of alpha(S)(m(Z)) = 0.1151(-0.0032)(+0.0033) is extracted. This is the first determination of alpha(S) using events from top-quark production. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
关键词PARTON DISTRIBUTIONS (MS)OVER-BAR MASSES HIGGS-BOSON LHC JETS
学科领域Physics
DOI10.1016/j.physletb.2013.12.009
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000330556000078
引用统计
被引频次:70[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/311005/213653
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS Collaboration. Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV[J]. PHYSICS LETTERS B,2014,728:496-517.
APA CMS Collaboration.(2014).Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV.PHYSICS LETTERS B,728,496-517.
MLA CMS Collaboration."Determination of the top-quark pole mass and strong coupling constant from the t(t)over-bar production cross section in pp collisions at root s=7 TeV".PHYSICS LETTERS B 728(2014):496-517.
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