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Performance of CMS muon reconstruction in pp collision events at root s=7Tev

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.


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        "affiliation": "Yerevan Phys Inst, Yerevan 375036, Armenia", 
        "name": "Chatrchyan, S."
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        "affiliation": "Yerevan Phys Inst, Yerevan 375036, Armenia", 
        "name": "Khachatryan, V."
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        "affiliation": "Yerevan Phys Inst, Yerevan 375036, Armenia", 
        "name": "Sirunyan, A. M."
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        "affiliation": "Yerevan Phys Inst, Yerevan 375036, Armenia", 
        "name": "Tumasyan, A."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Bergauer, T."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Fabjan, C."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Friedl, M."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Fruehwirth, R."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Ghete, V. M."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Kiesenhofer, W."
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Krammer, M."
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      {
        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Liko, D."
      }, 
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        "affiliation": "OeAW, Inst Hochenergiephys, Vienna, Austria", 
        "name": "Liko, D."
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    "description": "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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      "title": "JOURNAL OF INSTRUMENTATION", 
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    "title": "Performance of CMS muon reconstruction in pp collision events at root s=7Tev"
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