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Performance of the CMS high-level trigger during LHC Run 2

Hayrapetyan, A.·Tumasyan, A. (ORCID:0009000006846742)·Adam, W. (ORCID:0000000190994341)·Andrejkovic, J.W.·Benato, L. (ORCID:0000000151357489)·Bergauer, T. (ORCID:0000000257860293)·Chatterjee, S. (ORCID:0000000326600349)·Damanakis, K. (ORCID:0000000153892872)·Dragicevic, M. (ORCID:0000000319676783)·Hussain, P.S. (ORCID:0000000248255278)·Jeitler, M. (ORCID:0000000251419560)·Krammer, N. (ORCID:0000000205480985)·Li, A. (ORCID:000000024547116X)·Liko, D. (ORCID:000000023380473X)·Mikulec, I. (ORCID:0000000303852746)·Schieck, J. (ORCID:0000000210588093)·Schöfbeck, R. (ORCID:0000000223328784)·Schwarz, D. (ORCID:0000000238217331)·Sonawane, M. (ORCID:0000000305107010)·Waltenberger, W. (ORCID:0000000262157228)·Wulz, C.-E. (ORCID:0000000192265812)·Janssen, T. (ORCID:0000000239984081)·Van Laer, T.·Van Mechelen, P. (ORCID:0000000287319051)·Breugelmans, N.·D'Hondt, J. (ORCID:0000000295986241)·Dansana, S. (ORCID:0000000277527471)·De Moor, A. (ORCID:0000000159641935)·Delcourt, M. (ORCID:0000000182061787)·Heyen, F.·Lowette, S. (ORCID:0000000339849987)·Makarenko, I. (ORCID:0000000285534508)·Müller, D. (ORCID:0000000217524527)·Tavernier, S. (ORCID:0000000267929522)·Tytgat, M. (ORCID:0000000239902074)·Van Onsem, G.P. (ORCID:0000000216642337)·Van Putte, S. (ORCID:0000000315593606)·Vannerom, D. (ORCID:0000000227475095)·Beghin, D.·Bilin, B. (ORCID:0000000314397128)·Brun, H.·Clerbaux, B. (ORCID:0000000185478211)·Das, A.K.·De Bruyn, I. (ORCID:0000000317044360)·De Lentdecker, G. (ORCID:0000000151247693)·Evard, H. (ORCID:0009000550391462)·Favart, L. (ORCID:0000000316457454)·Gianneios, P. (ORCID:0009000372330738)·Jaramillo, J. (ORCID:0000000338856608)·Khalilzadeh, A.·Khan, F.A. (ORCID:000900022039277X)·Lee, K. (ORCID:0000000308084184)·Malara, A. (ORCID:0000000186459282)·Paredes, S. (ORCID:0000000184879603)·Shahzad, M.A.·Thomas, L. (ORCID:0000000227563853)·Vanden Bemden, M. (ORCID:0009000077257945)·Vander Velde, C. (ORCID:0000000333927294)·Vanlaer, P. (ORCID:0000000279314496)·Cornelis, T. (ORCID:0000000195025363)·De Coen, M. (ORCID:0000000258547442)·Dobur, D. (ORCID:0000000300124866)·Gokbulut, G. (ORCID:0000000201756454)·Hong, Y. (ORCID:0000000347522458)·Knolle, J. (ORCID:0000000247815704)·Lambrecht, L. (ORCID:0000000191081560)·Marckx, D. (ORCID:0000000167522290)·Mota Amarilo, K. (ORCID:0000000317073348)·Skovpen, K. (ORCID:0000000211600621)·Van Den Bossche, N. (ORCID:0000000329734991)·van der Linden, J. (ORCID:000000027174781X)·Wezenbeek, L. (ORCID:000000016952891X)·Benecke, A. (ORCID:0000000302523609)·Bethani, A. (ORCID:0000000281507043)·Bruno, G. (ORCID:0000000188578197)·Caputo, C. (ORCID:0000000175224808)·De Favereau De Jeneret, J. (ORCID:0000000317758574)·Delaere, C. (ORCID:0000000187076021)·Donertas, I.S. (ORCID:000000017485412X)·Giammanco, A. (ORCID:0000000196408294)·Guzel, A.O. (ORCID:0000000294045933)·Jain, Sa. (ORCID:0000000150783689)·Lemaitre, V.·Lidrych, J. (ORCID:0000000314390196)·Mastrapasqua, P. (ORCID:0000000220432367)·Tran, T.T. (ORCID:000000033060350X)·Turkcapar, S. (ORCID:0000000326080494)·Alves, G.A. (ORCID:0000000283691446)·Coelho, E. (ORCID:0000000161149907)·Correia Silva, G. (ORCID:0000000162323591)·Hensel, C. (ORCID:0000000188747624)·Menezes De Oliveira, T. (ORCID:0009000947298354)·Mora Herrera, C. (ORCID:0000000339153170)·Rebello Teles, P. (ORCID:0000000190298506)·Soeiro, M.·Tonelli Manganote, E.J. (ORCID:0000000324598521)·Vilela Pereira, A. (ORCID:0000000331774626)·Aldá Júnior, W.L. (ORCID:0000000158559817)·Barroso Ferreira Filho, M. (ORCID:0000000339040571)·Brandao Malbouisson, H. (ORCID:000000021326318X)
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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× 10 34 cm -2 s -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.

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDSLarge detector systems for particle and astroparticle physicsTrigger concepts and systems (hardware and software)

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Hayrapetyan, A., Tumasyan, A. (ORCID:0009000006846742), Adam, W. (ORCID:0000000190994341), Andrejkovic, J.W., Benato, L. (ORCID:0000000151357489), Bergauer, T. (ORCID:0000000257860293), Chatterjee, S. (ORCID:0000000326600349), Damanakis, K. (ORCID:0000000153892872), Dragicevic, M. (ORCID:0000000319676783), Hussain, P.S. (ORCID:0000000248255278), Jeitler, M. (ORCID:0000000251419560), Krammer, N. (ORCID:0000000205480985), Li, A. (ORCID:000000024547116X), Liko, D. (ORCID:000000023380473X), Mikulec, I. (ORCID:0000000303852746), Schieck, J. (ORCID:0000000210588093), Schöfbeck, R. (ORCID:0000000223328784), Schwarz, D. (ORCID:0000000238217331), Sonawane, M. (ORCID:0000000305107010), Waltenberger, W. (ORCID:0000000262157228), Wulz, C.-E. (ORCID:0000000192265812), Janssen, T. (ORCID:0000000239984081), Van Laer, T., Van Mechelen, P. (ORCID:0000000287319051), Breugelmans, N., D'Hondt, J. (ORCID:0000000295986241), Dansana, S. (ORCID:0000000277527471), De Moor, A. (ORCID:0000000159641935), Delcourt, M. (ORCID:0000000182061787), Heyen, F., Lowette, S. (ORCID:0000000339849987), Makarenko, I. (ORCID:0000000285534508), Müller, D. (ORCID:0000000217524527), Tavernier, S. (ORCID:0000000267929522), Tytgat, M. (ORCID:0000000239902074), Van Onsem, G.P. (ORCID:0000000216642337), Van Putte, S. (ORCID:0000000315593606), Vannerom, D. (ORCID:0000000227475095), Beghin, D., Bilin, B. (ORCID:0000000314397128), Brun, H., Clerbaux, B. (ORCID:0000000185478211), Das, A.K., De Bruyn, I. (ORCID:0000000317044360), De Lentdecker, G. (ORCID:0000000151247693), Evard, H. (ORCID:0009000550391462), Favart, L. (ORCID:0000000316457454), Gianneios, P. (ORCID:0009000372330738), Jaramillo, J. (ORCID:0000000338856608), Khalilzadeh, A., Khan, F.A. (ORCID:000900022039277X), Lee, K. (ORCID:0000000308084184), Malara, A. (ORCID:0000000186459282), Paredes, S. (ORCID:0000000184879603), Shahzad, M.A., Thomas, L. (ORCID:0000000227563853), Vanden Bemden, M. (ORCID:0009000077257945), Vander Velde, C. (ORCID:0000000333927294), Vanlaer, P. (ORCID:0000000279314496), Cornelis, T. (ORCID:0000000195025363), De Coen, M. (ORCID:0000000258547442), Dobur, D. (ORCID:0000000300124866), Gokbulut, G. (ORCID:0000000201756454), Hong, Y. (ORCID:0000000347522458), Knolle, J. (ORCID:0000000247815704), Lambrecht, L. (ORCID:0000000191081560), Marckx, D. (ORCID:0000000167522290), Mota Amarilo, K. (ORCID:0000000317073348), Skovpen, K. (ORCID:0000000211600621), Van Den Bossche, N. (ORCID:0000000329734991), van der Linden, J. (ORCID:000000027174781X), Wezenbeek, L. (ORCID:000000016952891X), Benecke, A. (ORCID:0000000302523609), Bethani, A. (ORCID:0000000281507043), Bruno, G. (ORCID:0000000188578197), Caputo, C. (ORCID:0000000175224808), De Favereau De Jeneret, J. (ORCID:0000000317758574), Delaere, C. (ORCID:0000000187076021), Donertas, I.S. (ORCID:000000017485412X), Giammanco, A. (ORCID:0000000196408294), Guzel, A.O. (ORCID:0000000294045933), Jain, Sa. (ORCID:0000000150783689), Lemaitre, V., Lidrych, J. (ORCID:0000000314390196), Mastrapasqua, P. (ORCID:0000000220432367), Tran, T.T. (ORCID:000000033060350X), Turkcapar, S. (ORCID:0000000326080494), Alves, G.A. (ORCID:0000000283691446), Coelho, E. (ORCID:0000000161149907), Correia Silva, G. (ORCID:0000000162323591), Hensel, C. (ORCID:0000000188747624), Menezes De Oliveira, T. (ORCID:0009000947298354), Mora Herrera, C. (ORCID:0000000339153170), Rebello Teles, P. (ORCID:0000000190298506), Soeiro, M., Tonelli Manganote, E.J. (ORCID:0000000324598521), Vilela Pereira, A. (ORCID:0000000331774626), Aldá Júnior, W.L. (ORCID:0000000158559817), Barroso Ferreira Filho, M. (ORCID:0000000339040571), Brandao Malbouisson, H. (ORCID:000000021326318X). 2024-11-22. Performance of the CMS high-level trigger during LHC Run 2. https://doi.org/10.1088/1748-0221%2F19%2F11%2Fp11021

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