Every two years, the International Conference on High Energy Physics (ICHEP) brings together the world's leading theorists and experimentalists to present the latest advances in particle physics. The 2026 edition, hosted in Natal, Brazil, will welcome the global particle physics community from 30 July to 5 August for a week of presentations, discussions and collaboration.

The ATLAS Collaboration will present a portfolio of new results at ICHEP 2026, showcasing the breadth and strength of its research programme. Among them, first observations of polarisation in Z boson pairs and precision measurements of double Higgs boson processes, as well as the latest searches for physics beyond the Standard Model. These results are based on the extensive datasets collected during both Run 2 (2015–2018) and the recently completed Run 3 (2022–2026) of the Large Hadron Collider (LHC).

Many of these results will be featured in dedicated physics briefings, while others will be presented in plenary and parallel sessions throughout the conference. Follow the ICHEP 2026 tag to stay up to date with the latest ATLAS announcements, and explore the full list of new ATLAS results below as it grows during the conference.

New results presented at ICHEP 2026

Scalar boson and diboson searches

• Search for new scalars via X→SH→bb¯bb¯ in proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2607.18484, see figures)

Standard Model

• Observation of pair production of longitudinally polarized Z bosons in four-lepton final state with the ATLAS detector (arXiv:2607.12879, see figures)
• Observation of the electroweak production of γγjj at 13 TeV in 140 fb⁻¹ of pp collision data with the ATLAS detector (arXiv:2607.25869)
• Measurements of the electroweak production of a W boson in association with two jets at 13TeV with the ATLAS detector (arXiv:2607.21531, see figures)

Heavy Ions

• Measurement of J/ψ-jet correlations in pp and Pb+Pb collisions at sNN‾‾‾‾√=5.02 TeV with the ATLAS detector (arXiv:2606.31375, see figures)
• Observation of centrality-dependent dijet transverse momentum imbalance in O+O and Ne+Ne collisions at sNN‾‾‾‾√ = 5.36 TeV with the ATLAS detector (arXiv:2606.20463, see figures)

Combined Performance

• Measurement of the b-jet identification efficiency in dileptonic tt¯ events using proton-proton collision data at s√=13.6 TeV collected with the ATLAS detector (arXiv:2607.05322, see figures)
• Simultaneous efficiency measurements of b- and c-jets in tt¯ events from 13.6 TeV pp collision data collected with the ATLAS detector (arXiv:2607.06199, see figures)
• GN3X: Improved Transformer-based Tagger for Boosted Higgs Bosons in ATLAS (ATL-PHYS-PUB-2026-013)