| 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
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| 2014
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发表期刊 | PHYSICS LETTERS B
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卷号 | 728页码:496-517 |
通讯作者 | Chatrchyan, S (reprint author), CERN, CH-1211 Geneva 23, Switzerland.
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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
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学科领域 | Physics
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DOI | 10.1016/j.physletb.2013.12.009
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收录类别 | SCI
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语种 | 英语
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WOS类目 | Physics, Multidisciplinary
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WOS记录号 | WOS:000330556000078
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ihep.ac.cn/handle/311005/213653
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专题 | 粒子天体物理中心
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作者单位 | 中国科学院高能物理研究所
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推荐引用方式 GB/T 7714 |
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.
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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.
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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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1588.pdf
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Adobe PDF
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