Journal article
Performance of CMS muon reconstruction in pp collision events at√s = 7TeV
Journal of instrumentation, Vol.7(10), P10002
10/05/2012
DOI: 10.1088/1748-0221/7/10/P10002
Abstract
The performance of muon reconstruction, identification, and triggering in CMS has been studied using 40 pb−1 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/c is above 95% over the whole region of pseudorapidity covered by the CMS muon system, |η| < 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 GeVc is higher than 90% over the full η 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 100GeV/c 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.
Details
- Title: Subtitle
- Performance of CMS muon reconstruction in pp collision events at√s = 7TeV
- Creators
- CMS Collaboration
- Contributors
- Y Onel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Journal of instrumentation, Vol.7(10), P10002
- DOI
- 10.1088/1748-0221/7/10/P10002
- ISSN
- 1748-0221
- eISSN
- 1748-0221
- Language
- English
- Date published
- 10/05/2012
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199677102771
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