2024-03-28T09:38:01Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1400782018-06-28T07:30:49Zcom_10261_37com_10261_4col_10261_290
2016-11-11T11:55:55Z
urn:hdl:10261/140078
Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at √s = 8 TeV
Khachatryan, V.
Brochero Cifuentes, J. A.
Cabrillo, I. J.
Calderon, Alicia
Duarte Campderros, J.
Fernández, M.
Gómez, G.
Graziano, A.
López Virto, A.
Marco, Jesús
Marco, Rafael
Martínez-Rivero, Celso
Matorras, Francisco
Muñoz Sánchez, F. J.
Piedra, Jonatan
Rodrigo, Teresa
Rodríguez Marrero, Ana Y.
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar, Rocío
CMS Collaboration
Alexander von Humboldt Foundation
A. G. Leventis Foundation
European Research Council
European Commission
Council for Scientific and Industrial Research (India)
Foundation for Polish Science
Ministero dell'Istruzione, dell'Università e della Ricerca
Qatar National Research Fund
Alfred P. Sloan Foundation
Compagnia di San Paolo
Ministry of Education, Youth and Sports (Czech Republic)
Belgian Science Policy Office
et al.
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→γγ decays. Different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events.
2016-11-11T11:55:55Z
2016-11-11T11:55:55Z
2015
2016-11-11T11:55:55Z
artículo
Journal of Instrumentation 10: P08010 (2015)
http://hdl.handle.net/10261/140078
10.1088/1748-0221/10/08/P08010
http://dx.doi.org/10.13039/100005156
http://dx.doi.org/10.13039/501100004117
http://dx.doi.org/10.13039/501100000781
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003407
http://dx.doi.org/10.13039/100008982
http://dx.doi.org/10.13039/100000879
http://dx.doi.org/10.13039/100007388
eng
Publisher's version
https://doi.org/10.1088/1748-0221/10/08/P08010
Sí
info:eu-repo/grantAgreement/EC/FP7/246806
http://creativecommons.org/licenses/by/3.0/
openAccess
Institute of Physics Publishing