/ hep-ex CERN-PH-EP-2014-154

Performance of the ATLAS muon trigger in pp collisions at $\sqrt{s}=8$ TeV

Pages: 19

Abstract: The performance of the ATLAS muon trigger system has been evaluated with proton-proton collision data collected in 2012 at the Large Hadron Collider at a centre-of-mass energy of 8 TeV. The performance was primarily evaluated using events containing a pair of muons from the decay of Z bosons. The efficiency is measured for the single-muon trigger for a kinematic region of the transverse momentum $p_T$ between 25 and 100 GeV, with a statistical uncertainty of less than 0.01% and a systematic uncertainty of 0.6%. The performance is also compared in detail to the predictions from simulation. The efficiency was measured over a wide $p_T$ range (a few GeV to several hundred GeV) by using muons from J/$\psi$ mesons, W bosons, and top and antitop quarks. It showed highly uniform and stable performance.

Note: *Temporary entry*; 19 pages plus author list (34 pages total), 17 figures, 4 tables, submitted to European Physics Journal C, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TRIG-2012-03

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