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

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题名:	Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV
作者:	余欣珊;Khachatryan, Vardan
贡献者:	理學院物理學系
关键词:	calibration and fitting methods;cluster finding;pattern recognition;performance of high energy physics detectors
日期:	2015-08-01
上传时间:	2026-04-23 12:37:56 (UTC+8)
出版者:	IOP Publishing Ltd.;United States: Institute of Physics (IOP)
摘要:	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
显示于类别:	[物理學系] 期刊論文

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