Publicação: Performance of CMS muon reconstruction in pp collision events at √s = 7TeV
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Data
2012-10-01
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Coorientador
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Curso de graduação
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Resumo
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, < 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. © 2012 IOP Publishing Ltd and Sissa Medialab srl.
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Palavras-chave
Large detector-systems performance, Muon spectrometers, Particle identification methods, Particle tracking detectors, Particle tracking detectors (Gaseous detectors), Performance of High Energy Physics Detectors, Simulation methods and programs, Gaseous detectors, High energy physics detector, Muon spectrometer, Particle Identification Method, Particle tracking, High energy physics, Monte Carlo methods, Tellurium compounds, Charged particles
Idioma
Inglês
Como citar
Journal of Instrumentation, v. 7, n. 10, 2012.
