Search for electroweak-scale dijet resonances using trigger-level analysis with the ATLAS detector in 132 fb<SUP>-1</SUP> of <i>pp</i> collisions at √s=13 TeV


Aad G., Aakvaag E., Abbott B., Abdelhameed S., Abeling K., Abicht N. J., ...More

PHYSICAL REVIEW D, vol.112, no.9, 2025 (SCI-Expanded, Scopus) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 112 Issue: 9
  • Publication Date: 2025
  • Doi Number: 10.1103/15p2-bkg8
  • Journal Name: PHYSICAL REVIEW D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, INSPEC, MathSciNet, zbMATH, Nature Index
  • Istanbul University Affiliated: Yes

Abstract

This article reports on a search for dijet resonances using 132 fb(-1) of pp collision data recorded at root s = 13 TeV by the ATLAS detector at the Large Hadron Collider. The search is performed solely on jets reconstructed within the ATLAS trigger to overcome bandwidth limitations imposed on conventional single-jet triggers, which would otherwise reject data from decays of sub-TeV dijet resonances. Collision events with two jets satisfying transverse momentum thresholds of p(T) >= 85 GeV and jet rapidity separation of (sic)y(sic) < 0.6 are analysed for dijet resonances with invariant masses from 375 to 1800 GeV. A data-driven background estimate is used to model the dijet mass distribution from multijet processes. No significant excess above the expected background is observed. Upper limits are set at 95% confidence level on coupling values for a benchmark leptophobic axial-vector Z' model and on the production cross section for a new resonance contributing a Gaussian-distributed line-shape to the dijet mass distribution.