Franklin, MelissaHuth, JohnIppolito, ValerioLopez Mateos, DavidMercurio, KevinMorii, MasahiroSpearman, WilliamSun, SiyuanTolley, EmmaYen, AndyZevi Della Porta, G2017-07-202015ATLAS Collaboration. 2015. “Performance of the ATLAS Muon Trigger in pp Collisions at √s=8 TeV.” The European Physical Journal C 75 (3) (March). doi:10.1140/epjc/s10052-015-3325-9.1434-6044http://nrs.harvard.edu/urn-3:HUL.InstRepos:33470199The 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 < pT < 100 GeV, with a statistical uncertainty of less than 0.01% and a systematic uncertainty of 0.6%. The pT 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.en-USJournal Article2017-07-2010.1140/epjc/s10052-015-3325-9