For particle physicists, March means one thing: Moriond. Every spring, theorists and experimentalists from around the world gather at the Rencontres de Moriond conferences to present their latest results and exchange ideas. The 2026 edition marks the sixtieth anniversary of these meetings, beginning on 15 March with Electroweak Interactions and Unified Theories, followed by QCD and High Energy Interactions on 22 March.

This year’s conferences will showcase a rich harvest of new results from the ATLAS Collaboration. In total, 45 ATLAS analyses will debut at Moriond 2026, covering a wide range of topics, from high-precision studies of the top quark and the Higgs boson to record-setting searches for supersymmetry and other new physics phenomena.

The results draw on the powerful datasets collected during both Run 2 (2015–2018) and Run 3 (2022–ongoing) of the Large Hadron Collider (LHC). With many analyses already exploiting the latest Run 3 data, this year’s Moriond programme highlights the strong momentum of the ATLAS Run-3 analysis campaign.

Several results will be featured in upcoming physics briefings, with more presented in conference talks. Follow the Moriond 2026 tag to keep up with the latest announcements, and explore the full list of new ATLAS results below as it grows throughout the conferences.

---

Latest Physics Briefings and News

• ATLAS surpasses LEP limits in search for compressed higgsinos, Physics Briefing, 10 March 2026
• The curious case of the disappearing track, Physics Briefing, 10 March 2026
• The most elusive higgsinos, CERN Courier, 6 March 2026

---

New results presented at the 2026 Moriond Conferences

B-Physics

• Observation of structures in the J/ψ+ψ(2S) mass spectrum with the ATLAS detector (arXiv:2509.13101, see figures)

---

Exotic new physics

• Search for ttbar resonances in final states with exactly one or two leptons using 140 fb⁻¹ of proton-proton collision data at 13 TeV with the ATLAS experiment (arXiv:2512.17856, see figures)
• Search for massive, long-lived particles in events with displaced vertices and displaced muons in proton-proton collisions at 13.6 TeV with the ATLAS experiment (arXiv:2603.01991, see figures)

---

Higgs boson

• Search for H→cc¯ and measurement of H→bb¯ in vector-boson fusion production with the ATLAS Detector (arXiv:2511.21911, see figures)

---

Performance

• Performance and efficiency of a transformer-based quark/gluon jet tagger in the ATLAS experiment (arXiv:2512.03949, see figures)
• Calibration of the jet energy scale and resolution of small-radius jets using semileptonic tt¯ events with the ATLAS detector (arXiv:2512.17482, see figures)

---

Scalar boson and diboson searches

• Search for higgsinos in compressed mass spectra using low-momentum tracks in proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2511.20042, see figures)
• Search for long-lived charginos and τ-sleptons using final states with a disappearing track in proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2603.08315, see figures)
• Search for decays of the Higgs boson into pair-produced pseudoscalar particles decaying into τ⁺τ⁻τ⁺τ⁻ using proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2603.08323, see figures)
• Search for dimuon resonance in the 35 to 75 GeV mass range using 140 fb⁻¹ of 13 TeV proton-proton collisions with the ATLAS detector (arXiv:2601.21361, see figures)

---

Standard Model

• Evidence of ZZγ production with the ATLAS detector (arXiv:2602.17165, see figures)
• Measurement of inclusive dijet cross-sections in proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2512.19073, see figures)
• Observation of W⁺W⁻γ production in proton-proton collisions at 13 TeV with the ATLAS detector and constraints on anomalous quartic gauge-boson couplings (arXiv:2509.14070, see figures)
• Measurement of the W-boson angular coefficients and transverse momentum in proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2509.13759, see figures)
• Measurements of ZZ→ℓℓνν and ZZjj→ℓℓννjj productions in proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2511.15569, see figures)
• Measurement of inclusive dijet cross-sections in proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2512.19073, see figures)

---

Supersymmetry

• Search for long-lived particles using displaced vertices of oppositely charged leptons in 140 fb⁻¹ of proton-proton collisions at 13 TeV with the ATLAS detector (arXiv:2601.05664, see figures)
• Search for signatures of electroweakinos with photons, jets, and large missing transverse momentum in 13 TeV proton-proton collisions with the ATLAS detector (arXiv:2511.21240, see figures)

---

Top quark

• Observation of a cross-section enhancement near the tt¯ production threshold in 13 TeV proton-proton collisions with the ATLAS detector (arXiv:2601.11780, see figures)
• Measurement of the top-quark mass using decays with a J/ψ meson at 13 TeV with the ATLAS detector (arXiv:2511.23091, see figures)
• Constraints on effective field theories via quadruple-differential angular decay rates from t-channel single-top-quark production at 13 TeV with the ATLAS detector (arXiv:2510.23372, see figures)
• Differential cross-section measurements of coherent production of singly and doubly resonant top-quark in WWbb events with one lepton at 13 TeV with the ATLAS detector (arXiv:2510.26476, see figures)
• Measurement of differential t-channel single top (anti)quark production cross-sections at 13 TeV with the ATLAS detector (arXiv:2601.04938, see figures)