14-18 October 2013
Amsterdam, Beurs van Berlage
Europe/Amsterdam timezone

Real-time flavor tagging selection in ATLAS

14 Oct 2013, 15:00
45m
Grote zaal (Amsterdam, Beurs van Berlage)

Grote zaal

Amsterdam, Beurs van Berlage

Poster presentation Data acquisition, trigger and controls Poster presentations

Speaker

Adrian Buzatu (University of Glasgow (GB))

Description

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