PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Poster Session
Level-1 Track Quality Evaluation at CMS for the HL-LHC
C. Savard*  on behalf of the CMS Collaboration
Full text: pdf
Pre-published on: November 22, 2022
Published on: June 15, 2023
The upcoming High-Luminosity LHC will provide 200 proton-proton collisions per bunch crossing on average, thus creating highly complex events demanding efficient data reconstruction and processing. In order to meet these requirements, the CMS experiment is upgrading its Level-1 trigger system. Among these updates will be the reconstruction of charged particle tracks in the silicon tracker, enabling more precise track selection further down the pipeline. In this work, we will present the development of a track quality variable which combines many of the reconstructed track properties into one feature that describes whether the track is real or fake, or whether the reconstruction represents a genuine particle or not. Using machine learning techniques, track quality can be evaluated and used to select tracks efficiently and quickly while fitting within the tight computational resource constraints in the hardware. This track quality variable has immense value to beyond the standard model searches requiring exact reconstruction such as analyses using missing energy.
DOI: https://doi.org/10.22323/1.414.0962
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