Measurements of t(t)over-bar charge asymmetry using dilepton final states in pp collisions at root s=8 TeV

doi:10.1016/j.physletb.2016.07.006

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	Measurements of t(t)over-bar charge asymmetry using dilepton final states in pp collisions at root s=8 TeV
	CMS Collaboration
刊名	PHYSICS LETTERS B
	2016
卷号	760 页码:365
关键词	CMS Physics Top Charge asymmetry
DOI	10.1016/j.physletb.2016.07.006
英文摘要	The charge asymmetry in ttevents is measured using dilepton final states produced in ppcollisions at the LHC at root s = 8 TeV. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.5 fb(-1). The measurements are performed using events with two oppositely charged leptons (electrons or muons) and two or more jets, where at least one of the jets is identified as originating from a bottom quark. The charge asymmetry is measured from differences in kinematic distributions, unfolded to the parton level, of positively and negatively charged top quarks and leptons. The t (t) over bar and leptonic inclusive charge asymmetries are found to be 0.011 +/- 0.011 (stat) +/- 0.007 (syst) and 0.003 +/- 0.006 (stat) +/- 0.003 (syst), respectively. These results, as well as charge asymmetry measurements made as a function of the invariant mass, rapidity, and transverse momentum of the t (t) over bar system, are in agreement with predictions of the standard model. (C) 2016 The Author(s). Published by Elsevier B.V.
语种	英语
WOS记录号	WOS:000382890500060
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260741]
专题	高能物理研究所_粒子天体物理中心
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	CMS Collaboration. Measurements of t(t)over-bar charge asymmetry using dilepton final states in pp collisions at root s=8 TeV[J]. PHYSICS LETTERS B,2016,760:365.
APA	CMS Collaboration.(2016).Measurements of t(t)over-bar charge asymmetry using dilepton final states in pp collisions at root s=8 TeV.PHYSICS LETTERS B,760,365.
MLA	CMS Collaboration."Measurements of t(t)over-bar charge asymmetry using dilepton final states in pp collisions at root s=8 TeV".PHYSICS LETTERS B 760(2016):365.