Triggering on Long Lived Particles at ATLAS
Presented by Steve ALKIRE on 12 Aug 2011 from 10:50 to 11:10
Type: Parallel contribution
Session: Beyond the Standard Model
Track: Beyond the Standard Model
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.