Oct 14 – 18, 2013
Amsterdam, Beurs van Berlage
Europe/Amsterdam timezone

Real-time flavor tagging selection in ATLAS

Oct 14, 2013, 3:00 PM
Grote zaal (Amsterdam, Beurs van Berlage)

Grote zaal

Amsterdam, Beurs van Berlage

Poster presentation Data acquisition, trigger and controls Poster presentations


Adrian Buzatu (University of Glasgow (GB))


In high-­‐energy physics experiments, online selection is crucial to reject most uninteresting collisions and to focus on interesting physical signals. The b-­‐jet selection is part of the trigger strategy of the ATLAS experiment and is meant to select hadronic final states with heavy-­‐flavor content. This is important for the selection of physics channels with more than one b-­‐jet in the final state, enabling to reject QCD light jets and maintain affordable trigger rates without raising jet energy thresholds. ATLAS introduced b-­‐jet triggers in 2011 and deployed more complex and better performing tagging algorithms in 2012. An overview of the b-­‐jet trigger menu and its performance on real data is presented in this contribution. Data-­‐driven techniques to extract the online b-­‐tagging performance, a key ingredient for all analyses relying on such triggers, are also discussed and results presented.

Primary author

Mr Carlo Schiavi (INFN Genova)

Presentation materials