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Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV (CROSBI ID 201271)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Chatrchyan, S. ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko et al. Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV // Journal of Instrumentation, 7 (2012), P10002-1-P10002-84. doi: 10.1088/1748-0221/7/10/P10002

Podaci o odgovornosti

Chatrchyan, S. ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Đurić, Senka ; Kadija, Krešo ; Luetić, Jelena ; Morović, Srećko ; ... ; Mekterović, Darko ; ... ; Swanson, J.

engleski

Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV

The performance of muon reconstruction, identification, and triggering in CMS has been studied using 40 inverse picobarns of data collected in pp collisions at sqrt(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 is above 95% over the whole region of pseudorapidity covered by the CMS muon system, abs(eta) < 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 GeV 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 pT below 100 GeV and, using cosmic rays, it is shown to be better than 10% in the central region up to pT = 1 TeV. Observed distributions of all quantities are well reproduced by the Monte Carlo simulation.

Performance 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)

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Podaci o izdanju

7

2012.

P10002-1-P10002-84

objavljeno

1748-0221

10.1088/1748-0221/7/10/P10002

Povezanost rada

Fizika

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