What question did this study set out to answer?

This research aims to investigate long-lived particles and their unconventional signatures using data from the ATLAS experiment.

February 2, 2026Open Access

Recent results for long-lived and unconventional signatures in ATLAS

Key Points

This research aims to investigate long-lived particles and their unconventional signatures using data from the ATLAS experiment.
Utilized the full Run 2 dataset and initial Run 3 data at 13.6 TeV.
Conducted searches for various signatures, including displaced jets and vertices.
Analyzed data for anomalous ionization and unconventional final states.
No significant deviations from the Standard Model were observed.
Established stringent new constraints across several benchmark scenarios.

Abstract

The ATLAS experiment has performed a broad programme of searches for long-lived particles (LLPs) using the full Run~2 dataset and the first Run~3 data at s = 13. 6~TeV. These analyses cover a wide variety of experimental signatures, including displaced jets, displaced vertices, anomalous ionisation, and unconventional final states such as lepton-jets and emerging jets. No significant deviations from the Standard Model have been observed, and the results set stringent new constraints on a range of benchmark scenarios. This contribution summarises recent highlights of the ATLAS LLP programme presented at LHCP~2025

Recent results for long-lived and unconventional signatures in ATLAS

Key Points

Abstract

Cite This Study