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Performance of CMS muon reconstruction in pp collision events at√s = 7 TeV

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collaboration, The CMS·2012·Journal of Instrumentation

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 p T 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 p T 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 p T below 100GeV/c and, using cosmic rays, it is shown to be better than 10% in the central region up to p T = 1 TeV/c. Observed distributions of all quantities are well reproduced by the Monte Carlo simulation.

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Metadata

Authors
collaboration, T. C.
Venue
Journal of Instrumentation
Published
2012-10-05
Volume
7
Issue
10
Pages
P10002-P10002
ISSN
1748-0221 (ISSN-L)
OpenAlex
W2115613123
Cited by
664
References
18
FWCI
27.67
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Performance of CMS muon reconstruction in pp collision events at√s = 7 TeV. https://app.cochat.ai/papers/10.1088/1748-0221/7/10/p10002
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collaboration, T. C. (2012). Performance of CMS muon reconstruction in pp collision events at√s = 7 TeV. Journal of Instrumentation. https://doi.org/10.1088/1748-0221/7/10/p10002

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