Speaker
Description
Searches for long-lived particles (LLPs) have attracted much interest lately due to their high discovery potential in the LHC Run-3. Signatures featuring LLPs with long lifetimes and decaying inside the muon detectors of the CMS experiment at CERN are of particular interest. In this talk, we will describe a novel Level-1 trigger algorithm that significantly improves CMS's signal efficiency for these exotic signatures. The implementation has been done at multiple stages of the Level-1 trigger processing, considering limited FPGA logic resources and tight latency requirements. Events satisfying the Level-1 requirements are passed to a High-Level Trigger (HLT) algorithm that further reduces the rate to the target few Hz level. The developed trigger algorithms have been taking CMS data since 2022. Their performance, implementation, commissioning results, and potential future developments will be reported.
| Position | Research Fellow |
|---|---|
| Affiliation | CERN |
| Country | Switzerland |