2026-10-18T23:15:00Zhttps://ebyu-rdlopen.rawdatalibrary.net/oai/request

oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/155352026-10-18T20:30:23Zopenairedrivercom_ebyu_10000col_ebyu_10001

Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s = 7 TeVChatrchyan, S.Khachatryan, V.Sirunyan, A.M.Tumasyan, A.Adam, W.Bergauer, T.Dragicevic, M.Erö, J.Fabjan, C.Friedl, M.Frühwirth, R.Ghete, V.M.Hörmann, N.Hrubec, J.Jeitler, M.Kiesenhofer, W.Knünz, V.Krammer, M.Krätschmer, I.Liko, D.Mikulec, I.Rabady, D.Rahbaran, B.Rohringer, C.Rohringer, H.Schöfbeck, R.Strauss, J.Taurok, A.Treberer-Treberspurg, W.Waltenberger, W.Wulz, C.-E.Mossolov, V.Shumeiko, N.Suarez Gonzalez, J.Alderweireldt, S.Bansal, M.Bansal, S.Cornelis, T.De Wolf, E.A.Janssen, X.Knutsson, A.Luyckx, S.Mucibello, L.Ochesanu, S.Roland, B.Rougny, R.Van Haevermaet, H.Van Mechelen, P.Van Remortel, N.Van Spilbeeck, A.CalorimetersGamma detectors (scintillators, CZT, HPG, HgI etc)Large detector systems for particle and astroparticle physicsBosonsCalibrationGermanium compoundsIodine compoundsMercury compoundsReadout systemsTellurium compoundsAstroparticle physicsCentre-of-mass energiesElectromagnetic calorimeterEnvironmental stabilityGamma detectorsIntegrated luminosityProton proton collisionsRadiation environmentsPhosphorus compoundsThe 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.Institute of Physics2013Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/15535https://doi.org/10.1088/1748-0221/8/09/p090091748-0221enJournal of Instrumentationinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/15535