Performance of the ATLAS Trigger System in 2010

Abstract

Proton-proton collisions at sqrt{s} = 7 TeV and heavy ion collisions at sqrt{s_NN} = 2.76 TeV were produced by the LHC and recorded using the ATLAS experiment's trigger system in 2010. The LHC is designed with a maximum bunch crossing rate of 40 MHz and the ATLAS trigger system is designed to record approximately 200 of these per second. The trigger system selects events by rapidly identifying signatures of muon, electron, photon, tau lepton, jet, and B meson candidates, as well as using global event signatures, such as missing transverse energy. An overview of the ATLAS trigger system, the evolution of the system during 2010 and the performance of the trigger system components and selections based on the 2010 collision data are shown. A brief outline of plans for the trigger system in 2011 is presented

49 pages plus author list (62 pages total), 64 figures, 14 tables, final version to appear in European Physical Journal C

References in corpus (2)

• PYTHIA 6.4 Physics and Manual
• Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics

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• Measurement of the inclusive $t\bar{t}$ production cross section in the lepton+jets channel in $pp$ collisions at $\sqrt{s}$= 7 TeV with the ATLAS detector using support vector machines
• Z-dark search with the ATLAS detector
• Proposal to Search for Magnetically Charged Particles with Magnetic Charge 1e
• The Phase-I Trigger Readout Electronics Upgrade of the ATLAS Liquid Argon Calorimeters
• Illuminating all-hadronic final states with a photon: Exotic decays of the Higgs boson to four bottom quarks in vector boson fusion plus gamma at hadron colliders