Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data

	Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
	ATLAS collaboration
刊名	EUROPEAN PHYSICAL JOURNAL C
	2014
卷号	74 期号:10
关键词	CALORIMETER PARTICLE BOSON
通讯作者	Hrabovsky, M (reprint author), Aix Marseille Univ, CPPM, Marseille, France.
英文摘要	This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb(-1) of LHC proton-proton collision data taken at centre-of-mass energies of root s = 7 and 8 TeV. The reconstruction of electron and photon energies is optimised using multivariate algorithms. The response of the calorimeter layers is equalised in data and simulation, and the longitudinal profile of the electromagnetic showers is exploited to estimate the passive material in front of the calorimeter and reoptimise the detector simulation. After all corrections, the Z resonance is used to set the absolute energy scale. For electrons from Z decays, the achieved calibration is typically accurate to 0.05% in most of the detector acceptance, rising to 0.2% in regions with large amounts of passive material. The remaining inaccuracy is less than 0.2-1% for electrons with a transverse energy of 10 GeV, and is on average 0.3% for photons. The detector resolution is determined with a relative inaccuracy of less than 10% for electrons and photons up to 60 GeV transverse energy, rising to 40% for transverse energies above 500 GeV.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000346414700002
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213833]
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. Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data[J]. EUROPEAN PHYSICAL JOURNAL C,2014,74(10).
APA	ATLAS collaboration.(2014).Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data.EUROPEAN PHYSICAL JOURNAL C,74(10).
MLA	ATLAS collaboration."Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data".EUROPEAN PHYSICAL JOURNAL C 74.10(2014).