Performance of CMS muon reconstruction in cosmic-ray events

• Main Authors: Alver, Burak Han (Author), Bauer, Gerry P (Author), Bendavid, Joshua L. (Author), Busza, Wit (Author), Butz, Erik M. (Author), Cali, Ivan Amos (Author), Chan, M. (Author), D'Enterria, David (Author), Everaerts, Pieter Bruno Bart (Author), Gomez-Ceballos, Guillelmo (Author), Hahn, Kristian Allan (Author), Harris, Philip Coleman (Author), Jaditz, Stephen Hunter (Author), Kim, Y. (Author), Klute, Markus (Author), Lee, Y.-J (Author), Li, W. (Author), Loizides, Constantinos (Author), Ma, T. (Author), Miller, M. (Author), Nahn, Steven C. (Author), Paus, Christoph M. E. (Author), Roland, Christof E (Author), Roland, Gunther M (Author), Rudolph, Matthew Scott (Author), Stephans, George S. F. (Author), Sumorok, Konstanty C (Author), Sung, K. (Author), Vaurynovich, Siarhei S. (Author), Wenger, Edward Allen (Author), Wyslouch, Boleslaw (Author), Xie, S. (Author), Yilmaz, Yetkin (Author), Yoon, A. S. (Author), CMS Collaboration (Author)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Department of Nuclear Science and Engineering (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: IOP Publishing, 2019-07-08T20:57:56Z.
• Subjects: Article
• Online Access: Get fulltext

 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 10GeV/c to about 1% at 500 GeV/c.