Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at root s=8 TeV
CMS Collaboration
刊名JOURNAL OF INSTRUMENTATION
2015
卷号10页码:P06005
关键词Pattern recognition cluster finding calibration and fitting methods Performance of High Energy Physics Detectors
学科分类Instruments & Instrumentation
DOI10.1088/1748-0221/10/06/P06005
文章类型Article
英文摘要The performance and strategies used in electron reconstruction and selection at CMS are presented based on data corresponding to an integrated luminosity of 19.7 fb(-1), collected in proton-proton collisions at root s = 8TeV at the CERN LHC. The paper focuses on prompt isolated electrons with transverse momenta ranging from about 5 to a few 100 GeV. A detailed description is given of the algorithms used to cluster energy in the electromagnetic calorimeter and to reconstruct electron trajectories in the tracker. The electron momentum is estimated by combining the energy measurement in the calorimeter with the momentum measurement in the tracker. Benchmark selection criteria are presented, and their performances assessed using Z, SIC, and J/psi decays into e(+)+e(-) pairs. The spectra of the observables relevant to electron reconstruction and selection as well as their global efficiencies are well reproduced by Monte Carlo simulations. The momentum scale is calibrated with an uncertainty smaller than 0.3%. The momentum resolution for electrons produced in Z boson decays ranges from 1.7 to 4.5%, depending on electron pseudorapidity and energy loss through bremsstrahlung in the detector material.
类目[WOS]Instruments & Instrumentation
收录类别SCI
WOS记录号WOS:000358004200021
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被引频次:41[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/311005/228585
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
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CMS Collaboration. Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at root s=8 TeV[J]. JOURNAL OF INSTRUMENTATION,2015,10:P06005.
APA CMS Collaboration.(2015).Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at root s=8 TeV.JOURNAL OF INSTRUMENTATION,10,P06005.
MLA CMS Collaboration."Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at root s=8 TeV".JOURNAL OF INSTRUMENTATION 10(2015):P06005.
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