Search for new resonances in mass distributions of jet pairs using 139 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

Abstract

A search for new resonances decaying into a pair of jets is reported using the dataset of proton-proton collisions recorded at $\sqrt{s}=13$ TeV with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to an integrated luminosity of 139 fb${}^{-1}$. The distribution of the invariant mass of the two leading jets is examined for local excesses above a data-derived estimate of the Standard Model background. In addition to an inclusive dijet search, events with jets identified as containing $b$-hadrons are examined specifically. No significant excess of events above the smoothly falling background spectra is observed. The results are used to set cross-section upper limits at 95% confidence level on a range of new physics scenarios. Model-independent limits on Gaussian-shaped signals are also reported. The analysis looking at jets containing $b$-hadrons benefits from improvements in the jet flavour identification at high transverse momentum, which increases its sensitivity relative to the previous analysis beyond that expected from the higher integrated luminosity.

arXiv comment39 pages in total, author list starting page 23, 9 figures, 2 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2019-03/

References in corpus (49)

• A Large Mass Hierarchy from a Small Extra Dimension
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The Hierarchy Problem and New Dimensions at a Millimeter
• The anti-k_t jet clustering algorithm
• A Brief Introduction to PYTHIA 8.1
• FastJet user manual
• Parton distributions for the LHC
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Asymptotic formulae for likelihood-based tests of new physics
• Parton distributions with LHC data
• The ATLAS Simulation Infrastructure
• A General Algorithm for Calculating Jet Cross Sections in NLO QCD
• The Physics of Heavy Z' Gauge Bosons
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• Performance of the ATLAS Trigger System in 2015
• Production and Integration of the ATLAS Insertable B-Layer
• Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1
• Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC
• Next-to-leading order calculation of three-jet observables in hadron-hadron collision
• Trial factors for the look elsewhere effect in high energy physics
• Dark Matter Benchmark Models for Early LHC Run-2 Searches: Report of the ATLAS/CMS Dark Matter Forum
• ATLAS $b$-jet identification performance and efficiency measurement with $t\bar{t}$ events in $pp$ collisions at $\sqrt{s}=13$ TeV
• Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Simplified Models for Dark Matter Searches at the LHC
• Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• HistFitter software framework for statistical data analysis
• Three-jet cross sections in hadron-hadron collisions at next-to-leading order
• BAT - The Bayesian Analysis Toolkit
• Search for new particles decaying into dijets in proton-antiproton collisions at sqrt(s) = 1.96 TeV
• Search for new phenomena in dijet events using 37 fb${}^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$13 TeV with the ATLAS detector
• Search for narrow and broad dijet resonances in proton-proton collisions at $\sqrt{s}=$ 13 TeV and constraints on dark matter mediators and other new particles
• BlackMax: A black-hole event generator with rotation, recoil, split branes and brane tension
• Colorful quantum black holes at the LHC
• Search for low-mass dijet resonances using trigger-level jets with the ATLAS detector in $pp$ collisions at $\sqrt{s}=13$ TeV
• Measurement of dijet angular distributions at sqrt{s}=1.96TeV and searches for quark compositeness and extra spatial dimensions
• Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at sqrt(s) = 13 TeV
• Exploring Small Extra Dimensions at the Large Hadron Collider
• On hypothesis testing, trials factor, hypertests and the BumpHunter
• Global Search for New Physics with 2.0/fb at CDF
• Quantum black holes with charge, colour, and spin at the LHC
• 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
• Constraints on Z' models from LHC dijet searches and implications for dark matter
• Search for low-mass resonances decaying into two jets and produced in association with a photon using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for low mass vector resonances decaying to quark-antiquark pairs in proton-proton collisions at sqrt(s) = 13 TeV
• Search for resonances in the mass distribution of jet pairs with one or two jets identified as $b$-jets in proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Origin and Phenomenology of Weak-Doublet Spin-1 Bosons
• A unique signal of excited bosons in dijet data from pp-collisions

Cited by in corpus (98)

• Jet energy scale and resolution measured in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Anomaly Detection with Density Estimation
• Search for high mass dijet resonances with a new background prediction method in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• ATLAS flavour-tagging algorithms for the LHC Run 2 $pp$ collision dataset
• The High Quality QCD Axion and the LHC
• Dijet resonance search with weak supervision using $\sqrt{s}=13$ TeV $pp$ collisions in the ATLAS detector
• The Dark Machines Anomaly Score Challenge: Benchmark Data and Model Independent Event Classification for the Large Hadron Collider
• Simulation-Assisted Decorrelation for Resonant Anomaly Detection
• Heavy Axion Opportunities at the DUNE Near Detector
• Lepton-quark collisions at the Large Hadron Collider
• Comparing Weak- and Unsupervised Methods for Resonant Anomaly Detection
• The LHC Olympics 2020: A Community Challenge for Anomaly Detection in High Energy Physics
• Exploiting dijet resonance searches for flavor physics
• Majorana Neutrinos in Same-Sign $W^{\pm }{W}^{\pm }$ Scattering at the LHC: Breaking the TeV Barrier
• Implications for new physics from a novel puzzle in ${\bar{B}}_{(s)}^0\to D_{(s)}^{(\ast )+}\{{\pi }^{-},K^{-}\}$ decays
• Search for new phenomena in two-body invariant mass distributions using unsupervised machine learning for anomaly detection at $\sqrt{s}=13$ TeV with the ATLAS detector
• Exploration at the high-energy frontier: ATLAS Run~2 searches investigating the exotic jungle beyond the Standard Model
• Disentangling Seesaw in the Minimal Left-Right Symmetric Model
• Leptonic anomalous magnetic moments in $\nu$SMEFT
• Search for associated production of a $Z$ boson with an invisibly decaying Higgs boson or dark matter candidates at $\sqrt{s}=13$ TeV with the ATLAS detector
• Machine Learning in High Energy Physics: A review of heavy-flavor jet tagging at the LHC
• Revival of $H^{-}$ interpretation of $R_{D^{(\ast )}}$ anomaly and closing low mass window
• Searching for Elusive Dark Sectors with Terrestrial and Celestial Observations
• Testing Exotic Scalars with HiggsBounds
• Observing Left-Right Symmetry in the Cosmic Microwave Background
• Search for dijet resonances in events with an isolated charged lepton using $\sqrt{s}=13$ TeV proton-proton collision data collected by the ATLAS detector
• Probing Left-Right Symmetry via Gravitational Waves from Domain Walls
• Left-Right Symmetry at FCC-hh
• Corrections to electroweak precision observables from mixings of an exotic vector boson in light of the CDF $W$-mass anomaly
• Long-lived heavy neutral leptons at lepton colliders as a probe of left-right symmetric models
• Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Robust Limits from Upcoming Neutrino Telescopes and Implications on Minimal Dark Matter Models
• Consistency and Interpretation of the LHC (Di-)Di-Jet Excesses
• Testing left-right symmetry with an inverse seesaw mechanism at the LHC
• Multi-Higgs Production Probes Higgs Flavor
• Right-handed Neutrino Dark Matter, Neutrino Masses, and non-Standard Cosmology in a 2HDM
• Neutrino mass, mixing and muon $g-2$ explanation in $U(1{)}_{L_{\mu }-L_{\tau }}$ extension of left-right theory
• Search for the $Z^{\prime }$ boson decaying to a right-handed neutrino pair in leptophobic $\mathrm{U}(1)$ models
• Dijet and electroweak limits on a $Z^{\prime }$ boson coupled to quarks
• Pursuit of paired dijet resonances in the Run 2 dataset with ATLAS
• Parity and the origin of neutrino mass
• Multi-TeV Signals of Baryogenesis in Higgs Troika Model
• Current bounds on baryogenesis from complex Yukawa couplings of light fermions
• pyBumpHunter: A model independent bump hunting tool in Python for High Energy Physics analyses
• Z' boson mass reach and model discrimination at muon colliders
• Searching for dark jets with displaced vertices using weakly supervised machine learning
• Search for a heavy resonance decaying to a top quark and a W boson at $\sqrt{s}=$ 13 TeV in the fully hadronic final state
• Single Higgs Boson Production at Electron-Positron Colliders in Gauge-Higgs Unification
• Towards UV-Models of Kinetic Mixing and Portal Matter III: Relating Portal Matter and R-H Neutrino Masses
• Heavy Neutrino Searches via Same-sign Lepton Pairs at the Higgs Factory
• Dark Matter from Anomaly Cancellation at the LHC
• Distinguishing $W^{\prime }$ Signals at Hadron Colliders Using Neural Networks
• Search for top-philic heavy resonances in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Uncovering tau leptons-enriched semi-visible jets at the LHC
• Signals of $W^{\prime }$ and $Z^{\prime }$ bosons at the LHC in the $SU(3)\times SO(5)\times U(1)$ gauge-Higgs unification
• Search for heavy particles in the $b$-tagged dijet mass distribution with additional $b$-tagged jets in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS experiment
• Search for emerging jets in $pp$ collisions at $\sqrt{s}=13.6$ TeV with the ATLAS experiment
• Portable acceleration of CMS computing workflows with coprocessors as a service
• Dark charge versus electric charge
• Finding flavons at colliders
• Z'-explorer: a simple tool to probe Z' models against LHC data
• Search for low-mass resonances decaying into two jets and produced in association with a photon or a jet at $\sqrt{s}=13$ TeV with the ATLAS detector
• Hunting for bumps in the margins
• Third-generation-philic Hidden Naturalness
• Hide and Seek with the Third Family Hypercharge Model's $Z^{\prime }$ at the Large Hadron Collider
• Monopoles, Exotic states and Muon $g-2$ in TeV scale Trinification
• Signal-background interference for digluon resonances at the Large Hadron Collider
• Gaussian Process Regression as a Sustainable Data-driven Background Estimate Method at the (HL)-LHC
• Scotogenic model from an extended electroweak symmetry
• Cross-fertilising extra gauge boson searches at the LHC
• LHC Hadronic Jet Generation Using Convolutional Variational Autoencoders with Normalizing Flows
• Search for narrow trijet resonances in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Questions of flavor physics and neutrino mass from a flipped hypercharge
• An alternative gauged $U(1{)}_R$ symmetric model in light of the CDF II $W$ boson mass anomaly
• Weakly supervised anomaly detection for resonant new physics in the dijet final state using proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Fatjet signatures of heavy neutrinos and heavy leptons in a left-right model with universal seesaw at the HL-LHC
• Quirk SUEP
• Heavy $Z^{\prime }$ Bosons in the Secluded $U(1{)}^{\prime }$ Model at Hadron Colliders
• The Hydrogen Mixing Portal, Its Origins, and Its Cosmological Effects
• Mixed gluinos and sgluons from a new SU(3) gauge group
• Quantum black holes in the horizon quantum mechanics model at the Large Hadron Collider
• Search for quantum black hole production in lepton+jet final states using proton-proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• A note on blind technique for new physics searches in particle physics
• Muon $g-2$ Anomaly from a Massive Spin-2 Particle
• Exploring Strange Origin of Dirac Neutrino Masses at Hadron Colliders
• R-parity violation and 8 TeV four-jet events at the LHC
• Searching for New Physics in Hadronic Final States with Run 2 Proton-Proton Collision Data at the LHC
• Solving Combinatorial Problems at Particle Colliders Using Machine Learning
• Phenomenology of the standard HVM and 95.4 GeV excess
• Leptogenesis in an anomaly-free $\mathrm{U}(1)$ extension with higher-dimensional operators
• Search for heavy neutral resonances decaying to tau lepton pairs in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Theory, phenomenology, and experimental avenues for dark showers: a Snowmass 2021 report
• Right-Handed Leptonic Mixing and Enhancement Band in Left-Right Symmetry
• Enhancing di-jet resonance searches via a final-state radiation jet tagging algorithm
• W boson mass in the NP models with extra $U(1)$ gauge group
• Multi-TeV Signals of Higgs Troika Model
• Neutrino nonstandard interactions: Confronting COHERENT and LHC data
• Overview of Recent Results from ATLAS