Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb${}^{-1}$ of $\sqrt{s}$ =13 TeV $pp$ collision data with the ATLAS detector

Abstract

A search for the supersymmetric partners of quarks and gluons (squarks and gluinos) in final states containing jets and missing transverse momentum, but no electrons or muons, is presented. The data used in this search were recorded by the ATLAS experiment in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb${}^{-1}$. The results are interpreted in the context of various $R$-parity-conserving models where squarks and gluinos are produced in pairs or in association and a neutralino is the lightest supersymmetric particle. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 2.30 TeV for a simplified model containing only a gluino and the lightest neutralino, assuming the latter is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.85 TeV are excluded if the lightest neutralino is massless. These limits extend substantially beyond the region of supersymmetric parameter space excluded previously by similar searches with the ATLAS detector.

arXiv comment61 pages in total, author list starting page 45, 17 figures, 12 tables, published in JHEP 02 (2021) 143. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-22/

References in corpus (75)

• 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
• An Introduction to PYTHIA 8.2
• FastJet user manual
• Parton distributions for the LHC
• Asymptotic formulae for likelihood-based tests of new physics
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• Parton distributions for the LHC Run II
• Event generation with SHERPA 1.1
• Parton distributions with LHC data
• The ATLAS Simulation Infrastructure
• PDF4LHC recommendations for LHC Run II
• The total top quark pair production cross-section at hadron colliders through O(alpha_S^4)
• Scattering Amplitudes with Open Loops
• Top++: a program for the calculation of the top-pair cross-section at hadron colliders
• Herwig 7.0 / Herwig++ 3.0 Release Note
• A parton shower algorithm based on Catani-Seymour dipole factorisation
• QCD Matrix Elements + Parton Showers
• Comix, a new matrix element generator
• Pileup subtraction using jet areas
• QCD matrix elements + parton showers: The NLO case
• Performance of the ATLAS Trigger System in 2015
• Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
• QCD matrix elements and truncated showers
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• Muon reconstruction performance of the ATLAS detector in proton--proton collision data at $\sqrt{s}$=13 TeV
• Production and Integration of the ATLAS Insertable B-Layer
• Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production
• 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
• Electron and photon performance measurements with the ATLAS detector using the 2015-2017 LHC proton-proton collision data
• Simplified Models for LHC New Physics Searches
• Squark and Gluino Production at Hadron Colliders
• Performance of $b$-Jet Identification in the ATLAS Experiment
• Threshold resummation for squark-antisquark and gluino-pair production at the LHC
• Simplified Models for a First Characterization of New Physics at the LHC
• Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC
• Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Soft-gluon resummation for squark and gluino hadroproduction
• HATHOR for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions
• ATLAS data quality operations and performance for 2015-2018 data-taking
• Performance of missing transverse momentum reconstruction with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 13 TeV
• NLO matrix elements and truncated showers
• Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using $\sqrt{s}=8$ TeV proton--proton collision data
• HistFitter software framework for statistical data analysis
• Observation of $H\to b\bar{b}$ decays and $VH$ production with the ATLAS detector
• Electron efficiency measurements with the ATLAS detector using 2012 LHC proton-proton collision data
• t \bar{t} W production and decay at NLO
• Matching Tree-Level Matrix Elements with Interleaved Showers
• Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using 4.7 fb^-1 of sqrt(s) = 7 TeV proton-proton collision data
• Electron reconstruction and identification in the ATLAS experiment using the 2015 and 2016 LHC proton-proton collision data at $\sqrt{s}$ = 13 TeV
• Evaluation of three methods for calculating statistical significance when incorporating a systematic uncertainty into a test of the background-only hypothesis for a Poisson process
• Search for squarks and gluinos in final states with jets and missing transverse momentum using 36 fb${}^{-1}$ of $\sqrt{s}$=13 TeV $pp$ collision data with the ATLAS detector
• Next-to-leading order QCD corrections to t-tbar-Z production at the LHC
• Searching for Directly Decaying Gluinos at the Tevatron
• NNLL-fast: predictions for coloured supersymmetric particle production at the LHC with threshold and Coulomb resummation
• Evidence for the $H\to b\bar{b}$ decay with the ATLAS detector
• Search for supersymmetry in multijet events with missing transverse momentum in proton-proton collisions at 13 TeV
• Decays of Supersymmetric Particles: the program SUSY-HIT (SUspect-SdecaY-Hdecay-InTerface)
• Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
• Search for new phenomena with the MT2 variable in the all-hadronic final state produced in proton-proton collisions at sqrt(s) = 13 TeV
• Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run 2 data collected in 2015 and 2016
• NNLL resummation for squark and gluino production at the LHC
• Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
• NNLL resummation for squark-antisquark pair production at the LHC
• Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction
• Next-to-Leading-Order QCD corrections to J/ψ(Υ)+γproduction at the LHC
• Inclusive search for supersymmetry using the razor variables in pp collisions at sqrt(s) = 7 TeV
• Four-point correlation function of stress-energy tensors in N=4 superconformal theories
• Search for natural and split supersymmetry in proton-proton collisions at $\sqrt{s}=$ 13 TeV in final states with jets and missing transverse momentum
• Search for squarks and gluinos in events with an isolated lepton, jets, and missing transverse momentum at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Search for new physics with the MT2 variable in all-jets final states produced in pp collisions at sqrt(s) = 13 TeV
• Inclusive search for supersymmetry using razor variables in pp collisions at sqrt(s) = 13 TeV
• A search for new phenomena in pp collisions at sqrt(s) = 13 TeV in final states with missing transverse momentum and at least one jet using the alphaT variable

Cited by in corpus (63)

• Constraining new physics with SModelS version 2
• Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Searches for the BSM scenarios at the LHC using decision tree based machine learning algorithms: A comparative study and review of Random Forest, Adaboost, XGboost and LightGBM frameworks
• Collider Signals of Baryogenesis and Dark Matter from $B$ Mesons: A Roadmap to Discovery
• Publishing statistical models: Getting the most out of particle physics experiments
• Searches for new phenomena in events with two leptons, jets, and missing transverse momentum in 139 fb${}^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Muon g-2 vs LHC Run 2 in Supersymmetric Models
• Unleashing the full power of LHCb to probe Stealth New Physics
• Collider Searches for Dark Matter through the Higgs Lens
• General relativity effects in precision spin experimental tests of fundamental symmetries
• SModelS v2.3: enabling global likelihood analyses
• Precise prediction for the mass of the light MSSM Higgs boson for the case of a heavy gluino
• Renormalizable Models of Flavor-Specific Scalars
• Exploring Parameter Spaces with Artificial Intelligence and Machine Learning Black-Box Optimisation Algorithms
• Monojets reveal overlapping excesses for light compressed higgsinos
• Search for $B^0$ meson decays into $\Lambda$ and missing energy with a hadronic tagging method at Belle
• Comparison of SUSY spectra generators for natural SUSY and string landscape predictions
• Leptoquark-assisted Singlet-mediated Di-Higgs Production at the LHC
• Exploring Jet Substructure in Semi-visible jets
• Mixed modulus and anomaly mediation in light of the muon $g-2$ anomaly
• Electroweakino searches at the HL-LHC in the baryon number violating MSSM
• Comprehensive exploration of t-channel simplified models of dark matter
• Status of searches for electroweak-scale supersymmetry after LHC Run 2
• Measurement of the energy response of the ATLAS calorimeter to charged pions from $W^{\pm }\to {\tau }^{\pm }(\to {\pi }^{\pm }{\nu }_{\tau }){\nu }_{\tau }$ events in Run 2 data
• Search for $B$ Mesogenesis at BABAR
• A statistical combination of ATLAS Run 2 searches for charginos and neutralinos at the LHC
• Improving sensitivity of trilinear RPV SUSY searches using machine learning at the LHC
• Vector Boson Dark Matter From Trinification
• Muon g-2, Dark Matter and the Higgs mass in No-Scale Supergravity
• Loop induced top quark FCNC through top quark and dark matter interactions
• New Bounds on Light Sneutrino Masses: Rare SUSY Signals
• LHC constraints on electroweakino dark matter revisited
• PeV-scale leptogenesis, gravity waves and black holes from a SUSY-breaking phase transition
• Exploring the phenomenology of weak adjoint scalars in minimal $R$-symmetric models
• Universal Scotogenic Fermion Masses in Left-Right Gauge Model
• NNLL-fast 2.0: Coloured Sparticle Production at the LHC Run 3 with $\sqrt{S}$ = 13.6 TeV
• Les Houches guide to reusable ML models in LHC analyses
• The Higgs Boson Mass as Fundamental Parameter of the Minimal Supersymmetric Standard Model
• Current status of the light neutralino thermal dark matter in the phenomenological MSSM
• Novel Higgsino Dark Matter Signatures at the LHC
• A joint explanation for the soft lepton and monojet LHC excesses in the wino-bino model
• Leptonic signatures of color-sextet scalars II: Exploiting unique large-$E_{\text{T}}^{\text{miss}}$ signals at the LHC
• Imprint of SUSY in radiative B-meson decays
• Data-driven analysis of a SUSY GUT of flavour
• Minimal Nambu-Goldstone Higgs Model in Supersymmetric SU(5) Revisited
• Signatures of Supersymmetry in Neutrino Telescopes
• Constraining electroweak and strongly charged long-lived particles with CheckMATE
• Invisible neutron decay and light BSM particles
• Minimal dark matter in $SU(5)$ grand unification
• Implementation of full and simplified likelihoods in CheckMATE
• Prospects of Gluino searches in multi-lepton channels in the light of ongoing LHC RUN-III
• Rebalance and Smear for Multi-jet Background Estimation
• On Geometric Structure of Point Particles
• Markov Chain Monte Carlo analysis to probe trilinear $R$-parity violating SUSY scenarios and possible LHC signatures
• Probing baryogenesis with gravitational waves
• Dark Unification: a UV-complete Theory of Asymmetric Dark Matter
• The Strange Physics of Dark Baryons
• Machine Learning Electroweakino Production
• Search for squarks and gluinos in $pp$ collisions at $\sqrt{s}=13$ TeV and $13.6$ TeV in events with $\tau$-leptons, jets and missing transverse momentum using the ATLAS detector
• New Contributions to $b\to s\gamma$ in Minimal G2HDM
• Baryogenesis via relativistic bubble walls
• Impact of quark flavor violating SUSY on h(125) decays at future lepton colliders
• Deciphering compressed electroweakino excesses with MadAnalysis 5