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


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Aad G., Abbott B., Abdallah J., Khalek S. A. , Abdinov O., Aben R., ...More

EUROPEAN PHYSICAL JOURNAL C, vol.75, no.3, 2015 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 75 Issue: 3
  • Publication Date: 2015
  • Doi Number: 10.1140/epjc/s10052-015-3325-9
  • Title of Journal : EUROPEAN PHYSICAL JOURNAL C

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 8TeV. 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/Psi 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.