Title
Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at <tex>$\sqrt{s}=$</tex> 8TeV Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at <tex>$\sqrt{s}=$</tex> 8TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Bristol :Institute of Physics ,
Subject
Physics
Source (journal)
Journal of instrumentation. - Bristol, 2006, currens
Volume/pages
10(2015) , 60 p.
ISSN
1748-0221
1748-0221
Article Reference
P08010
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
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.
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/8f7164/128785.pdf
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