Performance of top-quark and $W$-boson tagging with ATLAS in Run 2 of the LHC

Abstract

The performance of taggers for hadronically decaying top quarks and $W$ bosons in $pp$ collisions at $\sqrt{s}$ = 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider is presented. A set of techniques based on jet shape observables are studied to determine a set of optimal cut-based taggers for use in physics analyses. The studies are extended to assess the utility of combinations of substructure observables as a multivariate tagger using boosted decision trees or deep neural networks in comparison with taggers based on two-variable combinations. In addition, for highly boosted top-quark tagging, a deep neural network based on jet constituent inputs as well as a re-optimisation of the shower deconstruction technique is presented. The performance of these taggers is studied in data collected during 2015 and 2016 corresponding to 36.1 fb${}^{-1}$ for the $t\bar{t}$ and $\gamma +$jet and 36.7 fb${}^{-1}$ for the dijet event topologies.

arXiv comment79 pages in total, author list starting page 63, 39 figures, 6 tables, submitted to The European Physical Journal C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/JETM-2018-03

References in corpus (83)

• Adam: A Method for Stochastic Optimization
• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• A Brief Introduction to PYTHIA 8.1
• Parton distributions for the LHC
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Herwig++ Physics and Manual
• The ATLAS Simulation Infrastructure
• The total top quark pair production cross-section at hadron colliders through O(alpha_S^4)
• A parton shower algorithm based on Catani-Seymour dipole factorisation
• Successive Combination Jet Algorithm For Hadron Collisions
• Better Jet Clustering Algorithms
• Jet substructure as a new Higgs search channel at the LHC
• Tuning Monte Carlo Generators: The Perugia Tunes
• Identifying Boosted Objects with N-subjettiness
• Performance of the ATLAS Trigger System in 2015
• Vector boson production at hadron colliders: a fully exclusive QCD calculation at NNLO
• QCD matrix elements and truncated showers
• The Catchment Area of Jets
• Jet Trimming
• Muon reconstruction performance of the ATLAS detector in proton--proton collision data at $\sqrt{s}$=13 TeV
• Parton distributions with QED corrections
• Production and Integration of the ATLAS Insertable B-Layer
• Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1
• Performance of pile-up mitigation techniques for jets in $pp$ collisions at $\sqrt{s}=8$ TeV using the ATLAS detector
• Luminosity determination in pp collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector at the LHC
• Performance of $b$-Jet Identification in the ATLAS Experiment
• Energy Correlation Functions for Jet Substructure
• Maximizing Boosted Top Identification by Minimizing N-subjettiness
• Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Recombination Algorithms and Jet Substructure: Pruning as a Tool for Heavy Particle Searches
• Fat Jets for a Light Higgs
• Performance of missing transverse momentum reconstruction with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
• NLO matrix elements and truncated showers
• Stop Reconstruction with Tagged Tops
• Jet-Images -- Deep Learning Edition
• Deep-learning Top Taggers or The End of QCD?
• Strategies to Identify Boosted Tops
• Electron efficiency measurements with the ATLAS detector using 2012 LHC proton-proton collision data
• Jet Substructure Classification in High-Energy Physics with Deep Neural Networks
• Power Counting to Better Jet Observables
• Jet Shapes with the Broadening Axis
• Deep-learned Top Tagging with a Lorentz Layer
• Systematics of quark/gluon tagging
• Measurement of $W^{\pm }$ and $Z$-boson production cross sections in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Finding top quarks with shower deconstruction
• Top Jets at the LHC
• Measurements of $b$-jet tagging efficiency with the ATLAS detector using $t\bar{t}$ events at $\sqrt{s}=13$ TeV
• Pulling Out All the Tops with Computer Vision and Deep Learning
• Hadronization Corrections to Jet Cross Sections in Deep-Inelastic Scattering
• QCD-Aware Recursive Neural Networks for Jet Physics
• Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton-proton collisions at the LHC
• Identification techniques for highly boosted W bosons that decay into hadrons
• Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
• Multivariate discrimination and the Higgs + W/Z search
• Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at $\sqrt{s}=8$ TeV
• A measurement of the soft-drop jet mass in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• In situ calibration of large-$R$ jet energy and mass in 13 TeV proton-proton collisions with the ATLAS detector
• Measurements of $t\bar{t}$ differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector
• ATLAS measurements of the properties of jets for boosted particle searches
• Searches for heavy diboson resonances in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for diboson resonances with boson-tagged jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for pair production of heavy vector-like quarks decaying into high-$p_T$ $W$ bosons and top quarks in the lepton-plus-jets final state in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector
• Search for heavy resonances decaying to a $W$ or $Z$ boson and a Higgs boson in the $q{\bar{q}}^{(\prime )}b\bar{b}$ final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• New approach to identifying boosted hadronically-decaying particle using jet substructure in its center-of-mass frame
• Search for $W^{\prime }\to tb$ decays in the hadronic final state using pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Identification of high transverse momentum top quarks in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Jet Constituents for Deep Neural Network Based Top Quark Tagging
• Reports of My Demise Are Greatly Exaggerated: $N$-subjettiness Taggers Take On Jet Images
• Long Short-Term Memory (LSTM) networks with jet constituents for boosted top tagging at the LHC
• Search for heavy resonances decaying to a photon and a hadronically decaying $Z/W/H$ boson in $pp$ collisions at $\sqrt{s}=13$ $\mathrm{TeV}$ with the ATLAS detector
• Measurement of $WW/WZ\to \ell \nu q{q}^{\prime }$ production with the hadronically decaying boson reconstructed as one or two jets in $pp$ collisions at $\sqrt{s}=8$ TeV with ATLAS, and constraints on anomalous gauge couplings
• Measurement of kT splitting scales in W->lv events at sqrt(s)=7 TeV with the ATLAS detector
• A new method to distinguish hadronically decaying boosted $Z$ bosons from $W$ bosons using the ATLAS detector

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