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


Aad G., Abajyan T., Abbott B., Abdallah J., Khalek S. A., Abdelalim A. A., ...More

JOURNAL OF INSTRUMENTATION, vol.8, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 8
  • Publication Date: 2013
  • Doi Number: 10.1088/1748-0221/8/07/p07015
  • Journal Name: JOURNAL OF INSTRUMENTATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Trigger concepts and systems (hardware and software), Online farms and online filtering, Trigger algorithms
  • Middle East Technical University Affiliated: Yes

Abstract

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.