Real-time flavor tagging selection in ATLAS

Abstract : In high-energy physics experiments the online selection is crucial to reject the overwhelming uninteresting collisions. The ATLAS experiment includes b-jet selections in its trigger system, in order to select final states with significant heavy-flavor content. Dedicated selections are developed to timely identifing fully hadronic final states containing b-jets and maintaining affordable trigger rates. ATLAS successfully operated b-jet trigger selections during both 2011 and 2012 Large Hadron Collider data-taking campaigns. Work is on-going now to improve the performance of online tagging algorithms to be deployed in Run 2 in 2015. An overview of the Run 1 ATLAS b-jet trigger strategy along with future prospects is presented in this paper. Data-driven techniques to extract the online b-tagging performance, a key ingredient for all analyses relying on such triggers, are also discussed and preliminary results presented.
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Conference papers
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Submitted on : Wednesday, February 15, 2017 - 8:50:47 AM
Last modification on : Thursday, January 18, 2018 - 1:55:52 AM

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D. Madaffari. Real-time flavor tagging selection in ATLAS. 37th International Conference on High Energy Physics (ICHEP), Jul 2014, Valence, Spain. pp. 2524-2526, ⟨10.1016/j.nuclphysbps.2015.09.446⟩. ⟨in2p3-01467995⟩

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