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https://hdl.handle.net/11147/5299
Title: | Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at ?s = 7 TeV | Authors: | CMS Collaboration Karapınar, Güler |
Keywords: | Calorimeters Astroparticle physics Large detector systems Gamma detectors Energy calibration |
Publisher: | IOP Publishing Ltd. | Source: | Chatrchyan, S, Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., ...CMS Collaboration (2013). Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s = 7 TeV. Journal of Instrumentation, 8(9). doi:10.1088/1748-0221/8/09/P09009 | Abstract: | The energy calibration and resolution of the electromagnetic calorimeter (ECAL) of the CMS detector have been determined using proton-proton collision data from LHC operation in 2010 and 2011 at a centre-of-mass energy of √s = 7 TeV with integrated luminosities of about 5fb-1. Crucial aspects of detector operation, such as the environmental stability, alignment, and synchronization, are presented. The in-situ calibration procedures are discussed in detail and include the maintenance of the calibration in the challenging radiation environment inside the CMS detector. The energy resolution for electrons from Z-boson decays is better than 2% in the central region of the ECAL barrel (for pseudorapidity |η| < 0.8) and is 2-5% elsewhere. The derived energy resolution for photons from 125 GeV Higgs boson decays varies across the barrel from 1.1% to 2.6% and from 2.2% to 5% in the endcaps. The calibration of the absolute energy is determined from Ze→+e - decays to a precision of 0.4% in the barrel and 0.8% in the endcaps. © 2013 CERN for the benefit of the CMS collaboration. | URI: | http://doi.org/10.1088/1748-0221/8/09/P09009 http://hdl.handle.net/11147/5299 |
ISSN: | 1748-0221 1748-0221 |
Appears in Collections: | Mathematics / Matematik Rectorate / Rektörlük Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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