About
This seminar will present recent results from the ATLAS Collaboration in searches for non-conventional jet signatures motivated by extensions of the Standard Model that include dark QCD-like dynamics, including one result that uses data from LHC Run 3. The analyses target two distinct topologies: semi-visible jets, which consist of a mixture of visible Standard Model hadrons and invisible dark-sector particles, and emerging jets, characterized by displaced vertices resulting from long-lived dark hadrons decaying back into Standard Model particles. To enhance sensitivity to these non-standard signatures, advanced machine learning techniques, including transformers trained on charged-particle track features, are used to discriminate signal-like jets from QCD backgrounds. A model-independent ``anomaly detection'' search strategy was also implemented to cover a wide range of the dark-sector parameter space. These results represent a significant step in probing the structure of hidden sectors and contribute to the broader effort to uncover the particle nature of dark matter.
Refreshments will be served at 10h30
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The talk
Credits and licence
- Institution
- CERN
- Department
- LHC Seminar
- Speaker
- Giuliano Gustavino
- Year
- 2025
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed