# Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data

Abstract : This paper presents the performance of the ATLAS muon reconstruction during the LHC run with $pp$ collisions at $\sqrt{s}=7-8$ 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 $J/\psi\to \mu\mu$, $Z\to \mu\mu$ and $\Upsilon\to\mu\mu$ 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 $|\eta|<2.7$ and $5 \lesssim p_{\mathrm{T}} \lesssim 100$ 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 $p_{\mathrm{T}} \simeq 10$ GeV, to $4\%$ at large rapidity and $p_{\mathrm{T}} \simeq 100$ 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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-01024314
Contributor : Emmanuelle Vernay <>
Submitted on : Wednesday, July 16, 2014 - 8:20:55 AM
Last modification on : Thursday, February 25, 2021 - 10:58:33 AM

### Citation

G. Aad, S. Albrand, J. Brown, J. Collot, S. Crépé-Renaudin, et al.. Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2014, 74 (11), pp.3130. ⟨10.1140/epjc/s10052-014-3130-x⟩. ⟨in2p3-01024314⟩

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