Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105572

Title:	Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV
Authors:	林宗泰;Khachatryan, Vardan
Contributors:	理學院物理學系
Keywords:	calibration and fitting methods;cluster finding;pattern recognition;performance of high energy physics detectors
Date:	2015-08-01
Issue Date:	2026-04-23 12:38:12 (UTC+8)
Publisher:	IOP Publishing Ltd.;United States: Institute of Physics (IOP)
Abstract:	摘要： A description is provided of the performance of the CMS detector for photon reconstruction and identification in proton-proton collisions at a centre-of-mass energy of 8 TeV at the CERN LHC. Details are given on the reconstruction of photons from energy deposits in the electromagnetic calorimeter (ECAL) and the extraction of photon energy estimates. Furthermore, the reconstruction of electron tracks from photons that convert to electrons in the CMS tracker is also described, as is the optimization of the photon energy reconstruction and its accurate modelling in simulation, in the analysis of the Higgs boson decay into two photons. In the barrel section of the ECAL, an energy resolution of about 1% is achieved for unconverted or late-converting photons from H → γγ decays. Furthermore, different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events. 出版者： United States: Institute of Physics (IOP) 出版日期： 2015-08-18 出處： Journal of instrumentation, 2015-08, Vol.10 (8), p.P08010-P08010 資源來源： Institute of Physics Journals 識別號： ISSN: 1748-0221 識別號： EISSN: 1748-0221 識別號： DOI: 10.1088/1748-0221/10/08/P08010
Appears in Collections:	[Department of Physics] journal & Dissertation

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