Pursuit of paired dijet resonances in the Run 2 dataset with ATLAS

Abstract

New particles with large masses that decay into hadronically interacting particles are predicted by many models of physics beyond the Standard Model. A search for a massive resonance that decays into pairs of dijet resonances is performed using 140 fb${}^{-1}$ of proton$-$proton collisions at $\sqrt{s}=13$ TeV recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. Resonances are searched for in the invariant mass of the tetrajet system, and in the average invariant mass of the pair of dijet systems. A data-driven background estimate is obtained by fitting the tetrajet and dijet invariant mass distributions with a four-parameter dijet function and a search for local excesses from resonant production of dijet pairs is performed. No significant excess of events beyond the Standard Model expectation is observed, and upper limits are set on the production cross-sections of new physics scenarios.

45 pages in total, author list starting page 28, 8 figures, 1 table, published as Phys. Rev. D 108 (2023) 112005. All figures, including auxiliary figures, are available at: https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2022-18/

References in corpus (20)

• PYTHIA 6.4 Physics and Manual
• An Introduction to PYTHIA 8.2
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Dark Matter Candidates from Particle Physics and Methods of Detection
• A parton shower algorithm based on Catani-Seymour dipole factorisation
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• Baryon Number and Lepton Universality Violation in Leptoquark and Diquark Models
• Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Black Holes and Quantum Gravity at the LHC
• Colorful quantum black holes at the LHC
• Search for pair-produced resonances decaying to jet pairs in proton-proton collisions at sqrt(s) = 8 TeV
• Heavy octets and Tevatron signals with three or four b jets
• On hypothesis testing, trials factor, hypertests and the BumpHunter
• Constraints on mediator-based dark matter and scalar dark energy models using $\sqrt{s}=13$ TeV $pp$ collision data collected by the ATLAS detector
• Search for narrow resonances and quantum black holes in inclusive and b-tagged dijet mass spectra from pp collisions at sqrt(s) = 7 TeV
• Colored Resonances at the Tevatron: Phenomenology and Discovery Potential in Multijets
• Diquark Higgs at LHC
• A measurement of the calorimeter response to single hadrons and determination of the jet energy scale uncertainty using LHC Run-1 $pp$-collision data with the ATLAS detector

Cited by in corpus (7)

• Anomalies in Particle Physics
• Exploration at the high-energy frontier: ATLAS Run~2 searches investigating the exotic jungle beyond the Standard Model
• 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
• Ultraheavy diquark decaying into vectorlike quarks at the LHC
• R-parity violation and 8 TeV four-jet events at the LHC
• Observability of an ultraheavy diquark decaying into vectorlike quarks at the LHC
• Searches for New High-Mass Resonances Decaying to Fermions at the LHC