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Performance of the ATLAS muon trigger in pp collisions at s √ =8 TeV

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Article number120
<mark>Journal publication date</mark>03/2015
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Volume75
Number of pages31
Publication StatusPublished
Early online date13/03/15
<mark>Original language</mark>English

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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© CERN for the benefit of the ATLAS collaboration 2015. This article is published with open access at Springerlink.com EPJC is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0