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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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{
  "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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