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Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Eroe, J.; Fabjan, C.; Friedl, M.; Fruehwirth, R.; Ghete, V. M.; Hammer, J.; Hoch, M.; Hoermann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Krammer, M.; Liko, D.; Liko, D.
{ "DOI": "10.1088/1748-0221/7/10/P10002", "abstract": "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.", "author": [ { "family": "Chatrchyan", "given": " S." }, { "family": "Khachatryan", "given": " V." }, { "family": "Sirunyan", "given": " A. M." }, { "family": "Tumasyan", "given": " A." }, { "family": "Adam", "given": " W." }, { "family": "Bergauer", "given": " T." }, { "family": "Dragicevic", "given": " M." }, { "family": "Eroe", "given": " J." }, { "family": "Fabjan", "given": " C." }, { "family": "Friedl", "given": " M." }, { "family": "Fruehwirth", "given": " R." }, { "family": "Ghete", "given": " V. M." }, { "family": "Hammer", "given": " J." }, { "family": "Hoch", "given": " M." }, { "family": "Hoermann", "given": " N." }, { "family": "Hrubec", "given": " J." }, { "family": "Jeitler", "given": " M." }, { "family": "Kiesenhofer", "given": " W." }, { "family": "Krammer", "given": " M." }, { "family": "Liko", "given": " D." }, { "family": "Liko", "given": " D." } ], "container_title": "JOURNAL OF INSTRUMENTATION", "id": "225753", "issued": { "date-parts": [ [ 2012, 1, 1 ] ] }, "title": "Performance of CMS muon reconstruction in pp collision events at root s=7Tev", "type": "article-journal", "volume": "7" }
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