Triggers for displaced decays of long-lived neutral particles in the ATLAS detector

The ATLAS Collaboration

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18 Scopus citations


A set of three dedicated triggers designed to detect long-lived neutral particles decaying throughout the ATLAS detector to a pair of hadronic jets is described. The efficiencies of the triggers for selecting displaced decays as a function of the decay position are presented for simulated events. The effect of pile-up interactions on the trigger efficiencies and the dependence of the trigger rate on instantaneous luminosity during the 2012 data-taking period at the LHC are discussed.

Original languageEnglish (US)
Article numberP07015
JournalJournal of Instrumentation
Issue number7
StatePublished - 2013



  • Online farms and online filtering
  • Trigger algorithms
  • Trigger concepts and systems (hardware and software)

ASJC Scopus subject areas

  • Instrumentation
  • Mathematical Physics

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