CERN Accelerating science

Article
Report number arXiv:1206.4071 ; CMS-MUO-10-004 ; CERN-PH-EP-2012-173 ; CMS-MUO-10-004 ; CERN-PH-EP-2012-173
Title Performance of CMS muon reconstruction in pp collision events at s = 7 TeV
Author(s) CMS Collaboration  Mostrar todos os 2277 autores
Publication 2012
Imprint 19 Jun 2012
Number of pages 81
Note Comments: Submitted to the Journal of Instrumentation
Replaced with published version. Added journal reference and DOI
In: JINST 7 (2012) P10002
DOI 10.1088/1748-0221/7/10/P10002
Subject category Particle Physics - Experiment ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN LHC ; CMS
Free keywords detector ; experimental results
Abstract The performance of muon reconstruction, identification, and triggering in CMS has been studied using 40 inverse picobarns of data collected in pp collisions at s = 7 TeV at the LHC in 2010. A few benchmark sets of selection criteria covering a wide range of physics analysis needs have been examined. For all considered selections, the efficiency to reconstruct and identify a muon with a transverse momentum pT larger than a few GeV is above 95% over the whole region of pseudorapidity covered by the CMS muon system, abs(eta)<2.4, while the probability to misidentify a hadron as a muon is well below 1%. The efficiency to trigger on single muons with pT above a few GeV is higher than 90% over the full eta range, and typically substantially better. The overall momentum scale is measured to a precision of 0.2% with muons from Z decays. The transverse momentum resolution varies from 1% to 6% depending on pseudorapidity for muons with pT below 100 GeV and, using cosmic rays, it is shown to be better than 10% in the central region up to pT = 1 TeV/c. Observed distributions of all quantities are well reproduced by the Monte Carlo simulation.
Copyright/License publication: © 2012-2025 CERN (License: CC-BY-3.0)
preprint: © 2012-2025 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: cms-publication-committee-chair@cern.ch


 Record created 2012-06-19, last modified 2024-08-24


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