Performance of CMS muon reconstruction in pp collision events at √s = 7TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
01/10/2012
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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. |
Identificador |
http://dx.doi.org/10.1088/1748-0221/7/10/P10002 Journal of Instrumentation, v. 7, n. 10, 2012. 1748-0221 http://hdl.handle.net/11449/73609 10.1088/1748-0221/7/10/P10002 2-s2.0-84868533109 2-s2.0-84868533109.pdf |
Idioma(s) |
eng |
Relação |
Journal of Instrumentation |
Direitos |
openAccess |
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 |
Tipo |
info:eu-repo/semantics/article |