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Poster communications

Real-time flavor tagging selection in ATLAS

Abstract : In high-energy physics experiments on hadron colliders, online selection is crucial to reject most uninteresting collisions. In particular, the ATLAS experiment includes b-jet selections in its trigger strategy, in order to select final states with heavy-flavor content and enlarge its physics potentials. Dedicated selections are developed to quickly identify fully hadronic final states containing b-jets, while rejecting light QCD jets, and maintain affordable trigger rates without raising jet energy thresholds. ATLAS successfully operated b-jet trigger selections during both 2011 and 2012 data-taking campaigns and hard work is on-going now to improve the performance of tagging algorithms for coming Run2 in 2015. An overview of the ATLAS b-jet trigger strategy and its performance on real data is presented in this contribution, along with future prospects. 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.
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Poster communications
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Contributor : Danielle Cristofol <>
Submitted on : Friday, July 11, 2014 - 10:31:42 AM
Last modification on : Thursday, January 18, 2018 - 1:55:08 AM


  • HAL Id : in2p3-01022910, version 1



C. Schiavi, J. Stelzer, D. Madaffari. Real-time flavor tagging selection in ATLAS. Espagne, Jul 2014, Valencia, Spain. ⟨in2p3-01022910⟩



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