Performance of CMS Muon Reconstruction in Cosmic-Ray Events

Abstract

The performance of muon reconstruction in CMS is evaluated using a large data sample of cosmic-ray muons recorded in 2008. Efficiencies of various high-level trigger, identification, and reconstruction algorithms have been measured for a broad range of muon momenta, and were found to be in good agreement with expectations from Monte Carlo simulation. The relative momentum resolution for muons crossing the barrel part of the detector is better than 1% at 10 GeV/c and is about 8% at 500 GeV/c, the latter being only a factor of two worse than expected with ideal alignment conditions. Muon charge misassignment ranges from less than 0.01% at 10 GeV/c to about 1% at 500 GeV/c.

References in corpus (14)

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• Precise Mapping of the Magnetic Field in the CMS Barrel Yoke using Cosmic Rays
• Commissioning of the CMS Experiment and the Cosmic Run at Four Tesla
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• The Higgs boson and the physics of $WW$ scattering before and after Higgs discovery
• Search for the standard model Higgs boson produced in association with W and Z bosons in pp collisions at sqrt(s) = 7 TeV
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