Publication
Title
Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at 8TeV
Author
Institution/Organisation
CMS Collaboration
Abstract
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. 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 -> gamma gamma decays. Different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events.
Language
English
Source (journal)
Journal of instrumentation. - Bristol, 2006, currens
Publication
Bristol : Institute of Physics, 2015
ISSN
1748-0221
Volume/pages
10(2015), 60 p.
Article Reference
P08010
ISI
000362378700029
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 13.11.2015
Last edited 21.11.2017
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