Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 43: Invited Topical Talks I

T 43.3: Invited Topical Talk

Wednesday, March 18, 2026, 14:45–15:15, AudiMax

Searching for New Physics in Otherwise Lost LHC Data — •Falk Bartels — CERN

The search for physics beyond the Standard Model at the LHC is often limited by trigger requirements that prioritise high-energy signatures. As a consequence, potential signals at lower energies may evade conventional analyses altogether. Extending the experimental sensitivity into this previously inaccessible phase space is therefore a key challenge for current and future searches at both ATLAS and CMS.

This talk will discuss several innovative ideas that aim to overcome these limitations and open up new regions of parameter space for LHC searches. A central example is trigger-level analysis, which makes use of event information reconstructed online during data taking. By recording reduced event content at high rates, this strategy relaxes bandwidth constraints and allows searches to probe significantly lower mass scales. Beyond this, further developments are addressing the hardware-based Level-1 trigger, including the use of anomaly detection techniques to increase sensitivity to unconventional or unexpected signatures. Together, these approaches demonstrate how novel trigger concepts can substantially expand the discovery potential of the LHC.

Keywords: LHC; ATLAS; Trigger; Anomaly