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Measurement of the Muon Stopping Power in Lead Tungstate with the Electromagnetic Calorimeter in CMSBenaglia, A D
Journal of physics. Conference series, 04/2011, Letnik: 293, Številka: 1Journal Article
A large sample of cosmic ray events collected by the CMS detector has been exploited to measure the muon stopping power in the lead tungstate (PbWO4) of the electromagnetic calorimeter. The events were recorded in October-November 2008, during commissioning runs of the CMS detector with the solenoid at the nominal field strength of 3.8 T. The measurement spans a momentum range from 5 to 1000 GeV/c. The results are consistent with the expectations over the entire range. A comparison of collision losses with radiative losses allowed for a first experimental determination of muon critical energy in lead tungstate, measured to be 160+5−6 (stat.) ± 8 (syst.) GeV, in agreement with expectations.
