Triggers for displaced decays of long-lived neutral particles in the ATLAS detector
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KünyeAad, G., Abajyan, T., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdelalim, A.A. ... ATLAS Collaboration. (2013). Triggers for displaced decays of long-lived neutral particles in the ATLAS detector. Journal of Instrumentation, Volume 8, 34 p. http://dx.doi.org/10.1088/1748-0221/8/07/P07015.
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.