Measurement of the mass difference between top and anti-top quarks in pp collisions at root s=7 TeV using the ATLAS detector

	Measurement of the mass difference between top and anti-top quarks in pp collisions at root s=7 TeV using the ATLAS detector
	ATLAS collaboration
刊名	PHYSICS LETTERS B
	2014
卷号	728 页码:363-379
关键词	PARTON DISTRIBUTIONS LHC
通讯作者	Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
英文摘要	A measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb(-1) data sample of proton-proton collisions at root s = 7 TeV recorded with the ATLAS detector at the LHC, events consistent with t (t) over bar production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b-tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields Delta m = m(t) - m((t) over bar) = 0.67 +/- 0.61 (stat) +/- 0.41 (syst) GeV, consistent with CPT invariance. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000330556000059
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213652]
专题	高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	ATLAS collaboration. Measurement of the mass difference between top and anti-top quarks in pp collisions at root s=7 TeV using the ATLAS detector[J]. PHYSICS LETTERS B,2014,728:363-379.
APA	ATLAS collaboration.(2014).Measurement of the mass difference between top and anti-top quarks in pp collisions at root s=7 TeV using the ATLAS detector.PHYSICS LETTERS B,728,363-379.
MLA	ATLAS collaboration."Measurement of the mass difference between top and anti-top quarks in pp collisions at root s=7 TeV using the ATLAS detector".PHYSICS LETTERS B 728(2014):363-379.