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

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??? decays. Different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Journal of Instrumentation, Volume 10, August 2015

Editorial: Institute of Physics

 Fecha de publicación: 01/08/2015

Nº de páginas: 61

Tipo de publicación: Artículo de Revista

 DOI: 10.1088/1748-0221/10/08/P08010

ISSN: 1748-0221

Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1088/1748-0221/10/08/P08010