
Abstract
This paper presents the performance of the ATLAS muon reconstruction during the LHC run with pp collisions at √s = 7–8 TeV in 2011–2012, focusing mainly on data collected in 2012. Measurements of the reconstruction efficiency and of the momentum scale and resolution, based on large reference samples of J/ψ → μμ, Z → μμ and Υ → μμ decays, are presented and compared to Monte Carlo simulations. Corrections to the simulation, to be used in physics analysis, are provided. Over most of the covered phase space (muon |η| <2.7 and 5 <~ pT <~ 100 GeV) the efficiency is above 99% and is measured with per-mille precision. The momentum resolution ranges from 1.7% at central rapidity and for transverse momentum pT ~- 10 GeV, to 4% at large rapidity and pT ~- 100 GeV. The momentum scale is known with an uncertainty of 0.05% to 0.2% depending on rapidity. A method for the recovery of final state radiation from the muons is also presented
Item Type: | Journal article |
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Form of publication: | Publisher's Version |
Faculties: | Physics |
URN: | urn:nbn:de:bvb:19-epub-24291-0 |
ISSN: | 1434-6044 |
Alliance/National Licence: | This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively. |
Annotation: | SCOAP3-Publikation. - Weitere Autoren siehe PDF-Volltext |
Language: | English |
Item ID: | 24291 |
Date Deposited: | 01. Jul 2015, 09:00 |
Last Modified: | 08. May 2024, 08:33 |