Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at $\sqrt{s}=8$ TeV

Abstract

This paper reports a detailed study of techniques for identifying boosted, hadronically decaying $W$ bosons using 20fb${}^{-1}$ of proton-proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy $\sqrt{s}=$ 8 TeV. A range of techniques for optimising the signal jet mass resolution are combined with various jet substructure variables. The results of these studies in Monte Carlo simulations show that a simple pairwise combination of groomed jet mass and one substructure variable can provide a 50% efficiency for identifying $W$ bosons with transverse momenta larger than 200 GeV while maintaining multijet background efficiencies of 2-4% for jets with the same transverse momentum. These signal and background efficiencies are confirmed in data for a selection of tagging techniques.

53 pages plus author list + cover page (70 pages total), 25 figures, 8 tables, submitted to Eur. Phys. J. C, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/PERF-2015-03/

References in corpus (27)

• Big-Bang Nucleosynthesis
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Implications of CTEQ global analysis for collider observables
• Jet substructure as a new Higgs search channel at the LHC
• Pileup subtraction using jet areas
• The Catchment Area of Jets
• Jet substructure as a new Higgs search channel at the LHC
• Pileup Per Particle Identification
• Jet energy measurement and its systematic uncertainty in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Techniques for improved heavy particle searches with jet substructure
• Strategies to Identify Boosted Tops
• Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data
• Colour reconnections in Herwig++
• Power Counting to Better Jet Observables
• Jet mass and substructure of inclusive jets in sqrt(s) = 7 TeV pp collisions with the ATLAS experiment
• Pileup subtraction for jet shapes
• Efficient Identification of Boosted Semileptonic Top Quarks at the LHC
• Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Study of Monte Carlo approach to experimental uncertainty propagation with MSTW 2008 PDFs
• Identification techniques for highly boosted W bosons that decay into hadrons
• Measurements of normalized differential cross-sections for ttbar production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Particle-level pileup subtraction for jets and jet shapes
• Search for resonant diboson production in the $\ell \ell q\bar{q}$ final state in pp collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• W-jet Tagging: Optimizing the Identification of Boosted Hadronically-Decaying W Bosons
• Search for new resonances decaying via WZ to leptons in proton-proton collisions at sqrt(s) = 8 TeV
• Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

Cited by in corpus (50)

• Jet Substructure at the Large Hadron Collider: A Review of Recent Advances in Theory and Machine Learning
• Jet Substructure at the Large Hadron Collider: Experimental Review
• Classification without labels: Learning from mixed samples in high energy physics
• Jet-Images -- Deep Learning Edition
• Extending the Bump Hunt with Machine Learning
• New Angles on Energy Correlation Functions
• What is the Machine Learning?
• Parton Shower Uncertainties in Jet Substructure Analyses with Deep Neural Networks
• Performance of top-quark and $W$-boson tagging with ATLAS in Run 2 of the LHC
• Learning to Classify from Impure Samples with High-Dimensional Data
• Casimir Meets Poisson: Improved Quark/Gluon Discrimination with Counting Observables
• Thinking outside the ROCs: Designing Decorrelated Taggers (DDT) for jet substructure
• Weakly Supervised Classification in High Energy Physics
• Search for pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state using proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Combination of searches for heavy resonances decaying into bosonic and leptonic final states using 36 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• A measurement of the soft-drop jet mass in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Multi-Boson Interactions at the LHC
• DisCo Fever: Robust Networks Through Distance Correlation
• In situ calibration of large-$R$ jet energy and mass in 13 TeV proton-proton collisions with the ATLAS detector
• Search for heavy diboson resonances in semileptonic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for light resonances decaying to boosted quark pairs and produced in association with a photon or a jet in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Searches for heavy diboson resonances in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Recursive Soft Drop
• Jet Substructure Studies with CMS Open Data
• Search for diboson resonances with boson-tagged jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Mapping Machine-Learned Physics into a Human-Readable Space
• Optimisation of large-radius jet reconstruction for the ATLAS detector in 13 TeV proton-proton collisions
• Search for heavy resonances decaying to a $Z$ boson and a photon in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Identification of boosted Higgs bosons decaying into $b$-quark pairs with the ATLAS detector at 13 TeV
• Determination of jet calibration and energy resolution in proton-proton collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector
• Pileup and Underlying Event Mitigation with Iterative Constituent Subtraction
• Identification of high transverse momentum top quarks in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Disentangling Heavy Flavor at Colliders
• Factorization and Resummation for Groomed Multi-Prong Jet Shapes
• A new tagger for hadronically decaying heavy particles at the LHC
• 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
• A search for resonances decaying into a Higgs boson and a new particle $X$ in the $XH\to qqbb$ final state with the ATLAS detector
• The ATLAS Diboson Resonance in Non-Supersymmetric SO(10)
• Measurement of the jet mass in high transverse momentum $Z(\to b\overline{b})\gamma$ production at $\sqrt{s}=13$ TeV using the ATLAS detector
• Tagging boosted hadronic objects with dynamical grooming
• Dynamical vector resonances from the EChL in VBS at the LHC: the WW case
• Maximum performance of strange-jet tagging at hadron colliders
• Quark jet rates and quark/gluon discrimination in multi-jet final states
• Combination of Run-1 Exotic Searches in Diboson Final States at the LHC
• HE-LHC prospects for diboson resonance searches and electroweak WW/WZ production via vector boson scattering in the semi-leptonic final states
• Searching for New Physics in Hadronic Final States with Run 2 Proton-Proton Collision Data at the LHC
• Boosted and semi-boosted all-hadronic $t\bar{t}$ reconstruction performance on kinematic variables for selected BSM models using a 2D extesion of the BumpHunter algorithm
• Energy Flow in Particle Collisions
• Study of semi-boosted top quark reconstruction performance on the line shape of a $t\bar{t}$ resonance
• New Physics and Two Boosted W-jets plus Missing Energy