TY - JOUR
T1 - Performance of the CMS high-level trigger during LHC Run 2
AU - The CMS collaboration
AU - Hayrapetyan, A.
AU - Tumasyan, A.
AU - Adam, W.
AU - Andrejkovic, J. W.
AU - Benato, L.
AU - Bergauer, T.
AU - Chatterjee, S.
AU - Damanakis, K.
AU - Dragicevic, M.
AU - Hussain, P. S.
AU - Jeitler, M.
AU - Krammer, N.
AU - Li, A.
AU - Liko, D.
AU - Mikulec, I.
AU - Schieck, J.
AU - Schöfbeck, R.
AU - Schwarz, D.
AU - Sonawane, M.
AU - Waltenberger, W.
AU - Wulz, C. E.
AU - Janssen, T.
AU - Van Laer, T.
AU - Van Mechelen, P.
AU - Breugelmans, N.
AU - D'Hondt, J.
AU - Dansana, S.
AU - De Moor, A.
AU - Delcourt, M.
AU - Heyen, F.
AU - Lowette, S.
AU - Makarenko, I.
AU - Müller, D.
AU - Tavernier, S.
AU - Tytgat, M.
AU - Van Onsem, G. P.
AU - Van Putte, S.
AU - Vannerom, D.
AU - Beghin, D.
AU - Bilin, B.
AU - Brun, H.
AU - Cappati, A.
AU - Davignon, O.
AU - De Wit, A.
AU - Granier de Cassagnac, R.
AU - Nguyen, M.
AU - Ochando, C.
AU - Salerno, R.
AU - Zabi, A.
AU - Zghiche, A.
N1 - Publisher Copyright:
© 2024 CERN for the benefit of the CMS collaboration.
PY - 2024/11/1
Y1 - 2024/11/1
N2 - 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 × 1034 cm-2s-1, twice the initial design value, at √(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.
AB - 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 × 1034 cm-2s-1, twice the initial design value, at √(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.
KW - Large detector systems for particle and astroparticle physics
KW - Trigger concepts and systems (hardware and software)
U2 - 10.1088/1748-0221/19/11/P11021
DO - 10.1088/1748-0221/19/11/P11021
M3 - Article
AN - SCOPUS:85211243988
SN - 1748-0221
VL - 19
JO - Journal of Instrumentation
JF - Journal of Instrumentation
IS - 11
M1 - P11021
ER -