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Title
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Performance of CMS muon reconstruction in pp collision events at
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| The performance of muon reconstruction, identification, and triggering in CMS has been studied using 40pb(-1) of data collected in pp collisions at root s = 7TeV 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, vertical bar eta vertical bar < 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 GeV/c 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 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) = 1TeV/c. Observed distributions of all quantities are well reproduced by the Monte Carlo simulation. |
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Language
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English
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Source (journal)
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Journal of instrumentation. - Bristol, 2006, currens
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Publication
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Bristol
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Institute of Physics
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2012
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ISSN
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1748-0221
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DOI
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10.1088/1748-0221/7/10/P10002
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Volume/pages
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7
(2012)
, p. 1-86
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Article Reference
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P10002
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ISI
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000310834800012
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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