Trigger-Level Analysis at ATLAS

Experimental Particle Physics seminar

Trigger-Level Analysis at ATLAS

  • Event time: 4:00pm until 5:00pm
  • Event date: 23rd January 2026
  • Speaker: Dr. Tobias Fitschen (University of Manchester)
  • Location: Higgs Centre Seminar Room (4305, )

Event details

The ATLAS Collaboration recently released its full Run-2 dijet Trigger-Level Analysis (TLA), which processes an unprecedented dataset of more than 60 billion events within a single analysis. By reconstructing jets directly in the high-level trigger, TLA achieves a data-taking rate more than twenty times higher than the nominal ATLAS readout. This approach enables searches for new physics in dijet final states that would otherwise be limited by data-acquisition bandwidth. While conventional LHC dijet searches are typically restricted to masses above 1 TeV, the presented analysis extends the accessible mass range down to 375 GeV. As a result, the presented analysis sets world-leading exclusion limits for simplified dark matter models.

Event resources

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The experimental particle physics seminar series invites speakers from all over Europe to discuss the latest developments at the LHC, accelerator and non-accelerator based neutrino physics, hardware R&D and astroparticle physics. .

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