Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/11453
Title: Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at √s = 8 TeV
Authors: Khachatryan, V
Sirunyan, AM
Tumasyan, A
Adam, W
Bergauer, T
Dragicevic, M
Erö, J
Friedl, M
Frühwirth, R
Ghete, VM
Hartl, C
Hörmann, N
Hrubec, J
Jeitler, M
Jeitler, M
Kiesenhofer, W
Knünz, V
Krammer, M
Krätschmer, I
Liko, D
Mikulec, I
Rabady, D
Rahbaran, B
Rohringer, H
Schöfbeck, R
Strauss, W
Treberer-Treberspurg, J
Waltenberger, W
Wulz, CE
Wulz, CE
Mossolov, V
Shumeiko, N
Suarez Gonzalez, J
Alderweireldt, S
Bansal, S
Cornelis, T
De Wolf, EA
Janssen, X
Knutsson, A
Lauwers, J
Luyckx, S
Ochesanu, S
Rougny, R
Van De Klundert, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Van Spilbeeck, A
Blekman, F
Blyweert, S
DHondt, J
Daci, N
Heracleous, N
Keaveney, J
Lowette, S
Maes, M
Olbrechts, A
Python, Q
Strom, D
Tavernier, S
Van Doninck, W
Van Mulders, P
Van Onsem, GP
Villella, I
Caillol, C
Clerbaux, B
De Lentdecker, G
Dobur, D
Favart, L
Gay, APR
Grebenyuk, A
Léonard, A
Mohammadi, A
Perniè, L
Randle-Conde, A
Reis, T
Seva, T
Thomas, L
Velde Vander, C
Vanlaer, P
Wang, J
Zenoni, F
Adler, V
Beernaert, K
Benucci, L
Cimmino, A
Costantini, S
Crucy, S
Fagot, A
Garcia, G
McCartin, J
Ocampo Rios, AA
Poyraz, D
Ryckbosch, D
Salva Diblen, S
Sigamani, M
Keywords: CMS detector;Proton-proton collisions;Photon reconstruction;Electromagnetic calorimeter
Issue Date: 2015
Publisher: IOP publishing
Citation: Journal of Instrumentation,10 (8), (2015)
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 Hγγ decays. Different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events.
URI: http://iopscience.iop.org/article/10.1088/1748-0221/10/08/P08010/meta;jsessionid=F1D22EE9C00EF3325069568FCFF3BDBF.c1
http://bura.brunel.ac.uk/handle/2438/11453
DOI: http://dx.doi.org/10.1088/1748-0221/10/08/P08010
ISSN: 1748-0221
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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