Performance of the ATLAS Muon Trigger in pp Collisions at √s̅ = 8 TeV

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Abstract

The performance of the ATLAS muon trigger system is evaluated with proton-proton collision data collected in 2012 at the Large Hadron Collider at a centre-of-mass energy of 8 TeV. It is primarily evaluated using events containing a pair of muons from the decay of Z bosons. The efficiency of the single-muon trigger is measured for muons with transverse momentum 25 < p_T < 100 GeV, with a statistical uncertainty of less than 0.01% and a systematic uncertainty of 0.6%. The p_T range for efficiency determination is extended by using muons from decays of J/ψ mesons, W bosons, and top quarks. The muon trigger shows highly uniform and stable performance. The performance is compared to the prediction of a detailed simulation.;

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Keywords

J/ψ (J/psi) meson, Proton-proton interactions, W bosons, Z bosons, Muons, Transverse momentum

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Rights

CC BY 4.0 (Attribution), ©2015 CERN, for the ATLAS Collaboration.

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