Buchmann, Marco A.
Casal Laraña, Bruno
Eugster, Jürg J.
Martinez Ruiz del Arbol, Pablo
Ronga, Frédéric J.
Weber, Hannsjörg A.
- Journal Article
Rights / licenseCreative Commons Attribution 3.0 Unported
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 pT 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 pT 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 pT below 100GeV/c and, using cosmic rays, it is shown to be better than 10% in the central region up to pT = 1 TeV/c. Observed distributions of all quantities are well reproduced by the Monte Carlo simulation Show more
Journal / seriesJournal of Instrumentation
Pages / Article No.
PublisherInstitute of Physics
SubjectPerformance of High Energy Physics Detectors; Large detector-systems performance; Simulation methods and programs; Particle identification methods; Muon spectrometers; Particle tracking detectors; Particle tracking detectors (Gaseous detectors)
Organisational unit03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)
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