Performance of the CMS Level-1 trigger in proton-proton collisions at root s=13 TeV

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dc.authorid0000-0002-2614-5860en_US
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorArnold, B.
dc.contributor.authorSağır, Sinan
dc.contributor.authorCMS Collaboration
dc.date.accessioned2021-02-04T12:23:39Z
dc.date.available2021-02-04T12:23:39Z
dc.date.issued2020en_US
dc.departmentKMÜ, Sağlık Hizmetleri Meslek Yüksekokulu, Tıbbi Hizmetler ve Teknikler Bölümüen_US
dc.descriptionWOS:000608484200003en_US
dc.description.abstractAt the start of Run 2 in 2015, the LHC delivered proton-proton collisions at a center-ofmass energy of 13 TeV. During Run 2 (years 2015-2018) the LHC eventually reached a luminosity of 2.1 x 10(34) cm(-2) s(-1), almost three times that reached during Run 1 (2009-2013) and a factor of two larger than the LHC design value, leading to events with up to a mean of about 50 simultaneous inelastic proton-proton collisions per bunch crossing (pileup). The CMS Level-1 trigger was upgraded prior to 2016 to improve the selection of physics events in the challenging conditions posed by the second run of the LHC. This paper describes the performance of the CMS Level-1 trigger upgrade during the data taking period of 2016-2018. The upgraded trigger implements pattern recognition and boosted decision tree regression techniques for muon reconstruction, includes pileup subtraction for jets and energy sums, and incorporates pileup-dependent isolation requirements for electrons and tau leptons. In addition, the new trigger calculates high-level quantities such as the invariant mass of pairs of reconstructed particles. The upgrade reduces the trigger rate from background processes and improves the trigger efficiency for a wide variety of physics signals.en_US
dc.identifier.citationSirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Arnold, B., ... Sağır, S. (2020). Performance of the CMS Level-1 trigger in proton-proton collisions at root s=13 TeV. Journal of Instrumentation. 15, 10.en_US
dc.identifier.doi10.1088/1748-0221/15/10/P10017
dc.identifier.issn1748-0221
dc.identifier.issue10en_US
dc.identifier.scopus2-s2.0-85096366340
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1088/1748-0221/15/10/P10017
dc.identifier.urihttps://hdl.handle.net/11492/4867
dc.identifier.volume15en_US
dc.identifier.wosWOS:000608484200003
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Sceince
dc.indekslendigikaynakScopus
dc.institutionauthorSağır, Sinan
dc.language.isoen
dc.publisherIOP Publishing Ltd.en_US
dc.relation.journalJournal of Instrumentationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectLarge Detector-Systems Performanceen_US
dc.subjectTrigger Algorithmsen_US
dc.titlePerformance of the CMS Level-1 trigger in proton-proton collisions at root s=13 TeVen_US
dc.typeArticle

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