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Calibration of the CMS Hadron Calorimeter in Run 2

Various calibration techniques for the CMS Hadron calorimeter in Run2 and the results of calibration using 2016 collision data are presented. The radiation damage corrections, intercalibration of different channels using the phi-symmetry technique for barrel, endcap and forward calorimeter regions a...

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Detalles Bibliográficos
Autores principales: Chadeeva, Marina, Lychkovskaya, Natalia
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/13/03/C03025
http://cds.cern.ch/record/2297548
Descripción
Sumario:Various calibration techniques for the CMS Hadron calorimeter in Run2 and the results of calibration using 2016 collision data are presented. The radiation damage corrections, intercalibration of different channels using the phi-symmetry technique for barrel, endcap and forward calorimeter regions are described, as well as the intercalibration with muons of the outer hadron calorimeter. The achieved intercalibration precision is within 3\%. The {\it in situ} energy scale calibration is performed in the barrel and endcap regions using isolated charged hadrons and in the forward calorimeter using the Z$\rightarrow ee$ process. The impact of pileup and the developed technique of correction for pileup is also discussed. The achieved uncertainty of the response to hadrons is 3.4\% in the barrel and 2.6\% in the endcap region (at $\vert \eta \vert < 2$) and is dominated by the systematic uncertainty due to pileup contributions.