Performance of the ATLAS trigger system in 2015

By Scoap. European Physical Journal C: Particles and Fields, 2016

1,192 citations recorded by the source corpus.

During 2015 the ATLAS experiment recorded \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$3.8\,{\mathrm{fb}}^{-1}$$\end{document}3.8fb-1 of proton–proton collision data at a centre-of-mass energy of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$13\,{\mathrm{TeV}}$$\end{document}13TeV. The ATLAS trigger system is a crucial component of the experiment, responsible for selecting events of interest at a recording rate of approximately 1 kHz from up to 40 MHz of collisions. This paper presents a short overview of the changes to the trigger and data acquisition systems during the first long shutdown of the LHC and shows the performance of the trigger system and its components based on the 2015 proton–proton collision data.

Subfields: Computer Networks and Communications, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/5e40e49b35d5e27a61fdc91455ea93342519c1ee

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Citations in the corpus

Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at √s=13 TeV with the ATLAS detector (2017, methodology): “The HLT is designed to accept events that arewritten out to disk at an average rate of 1 kHz and reached a peak rate of 1.4 kHz in 2015.”
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector (2017, neutral): “Seven final states, categorized by the number and flavor of charged-lepton candidates, are examined for the presence of the Standard Model Higgs boson with a mass of 125 GeVand a pair of top quarks.”
Search for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector (2017, methodology): “A two-level trigger and data acquisition system is used to record events for offline analysis [32].”
Study of the rare decays of Bs0 and B0 mesons into muon pairs using data collected during 2015 and 2016 with the ATLAS detector (2018, background): “A first-level dimuon trigger [27] selects events requiring that one muon has pT > 4 GeV and the other has pT > 6 GeV.”
Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s=13 TeV with the ATLAS detector (2017, neutral): “A two-level trigger system [36] is used to select events.”
Search for new phenomena in high-mass diphoton final states using 37 fb−1 of proton–proton collisions collected at s=13 TeV with the ATLAS detector (2017, neutral): “Events are selected using a ﬁrst-level trigger implemented in custom electronics, which reduces the event rate to a design value of at most 100 kHz using a subset of detector information [22].”
Measurements of Higgs boson properties in the diphoton decay channel with 36 fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 13$ TeV with the ATLAS detector (2018, neutral): “4% by comparing the trigger efficiencies determined using a bootstrap method [16] in data and simulation.”
Performance of the ATLAS muon triggers in Run 2 (2020, background): “Following an L1 accept decision, the pT thresholds and the corresponding detector regions, called regions of interest (RoIs), are sent to the HLT for further consideration [1, 40].”