8-13 August 2011
Rhode Island Convention Center
US/Eastern timezone

Triggering on Long Lived Particles at ATLAS

12 Aug 2011, 10:50
Plenary Ballroom (Rhode Island Convention Center)

Plenary Ballroom

Rhode Island Convention Center

Parallel contribution Beyond the Standard Model Beyond the Standard Model


Steve Alkire (Department of Physics-University of Washington)


A number of extensions of the Standard Model result in neutral and weakly-coupled particles that decay to multi hadrons or multi leptons with macroscopic decay lengths. These particles with decay lengths that can be comparable with ATLAS detector dimensions represent, from an experimental point of view, a challenge both for the trigger and for the reconstruction capabilities of the ATLAS detector. We will present a set of signature driven triggers for the ATLAS detector that target such displaced decays, evaluate their performance for some benchmark models. In 2011 ATLAS has collected several hundred inverse picobarns and we will present a description of the triggers and their early performance.

Primary author

Steve Alkire (Department of Physics-University of Washington)

Presentation Materials