% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Hayrapetyan:617496, author = {Hayrapetyan, Aram and others}, collaboration = {{CMS Collaboration}}, title = {{P}erformance of the {CMS} high-level trigger during {LHC} {R}un 2}, reportid = {PUBDB-2024-06827, arXiv:2410.17038. CMS-TRG-19-001. CERN-EP-2024-259}, year = {2024}, note = {Submitted to the Journal of Instrumentation. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TRG-19-001 (CMS Public Pages)}, abstract = {The CERN LHC provided proton and heavy ion collisions during its Run 2 operation period from 2015 to 2018. Proton-proton collisions reached a peak instantaneous luminosity of 2.1 $\times$ 10$^{34}$ cm$^{-2}$s$^{-1}$, twice the initial design value, at $\sqrt{s}$ = 13 TeV. The CMS experiment records a subset of the collisions for further processing as part of its online selection of data for physics analyses, using a two-level trigger system: the Level-1 trigger, implemented in custom-designed electronics, and the high-level trigger, a streamlined version of the offline reconstruction software running on a large computer farm. This paper presents the performance of the CMS high-level trigger system during LHC Run 2 for physics objects, such as leptons, jets, and missing transverse momentum, which meet the broad needs of the CMS physics program and the challenge of the evolving LHC and detector conditions. Sophisticated algorithms that were originally used in offline reconstruction were deployed online. Highlights include a machine-learning b tagging algorithm and a reconstruction algorithm for tau leptons that decay hadronically.}, cin = {CMS}, cid = {I:(DE-H253)CMS-20120731}, pnm = {611 - Fundamental Particles and Forces (POF4-611) / DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe (390833306) / HIDSS-0002 - DASHH: Data Science in Hamburg - Helmholtz Graduate School for the Structure of Matter $(2019_IVF-HIDSS-0002)$ / GRK 2497 - GRK 2497: Physik der schwersten Teilchen am Large Hadron Collider (400140256)}, pid = {G:(DE-HGF)POF4-611 / G:(GEPRIS)390833306 / $G:(DE-HGF)2019_IVF-HIDSS-0002$ / G:(GEPRIS)400140256}, experiment = {EXP:(DE-H253)LHC-Exp-CMS-20150101}, typ = {PUB:(DE-HGF)25}, eprint = {2410.17038}, howpublished = {arXiv:2410.17038}, archivePrefix = {arXiv}, SLACcitation = {$\%\%CITATION$ = $arXiv:2410.17038;\%\%$}, doi = {10.3204/PUBDB-2024-06827}, url = {https://bib-pubdb1.desy.de/record/617496}, }