The CMS High Level Trigger

Abstract

At the Large Hadron Collider at CERN the proton bunches cross at a rate of 40MHz. At the Compact Muon Solenoid experiment the original collision rate is reduced by a factor of O (1000) using a Level-1 hardware trigger. A subsequent factor of O(1000) data reduction is obtained by a software-implemented High Level Trigger (HLT) selection that is executed on a multi-processor farm. In this review we present in detail prototype CMS HLT physics selection algorithms, expected trigger rates and trigger performance in terms of both physics efficiency and timing.

accepted by EPJ Nov 2005

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Cited by in corpus (37)

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• Measurement of the differential dijet production cross section in proton-proton collisions at sqrt(s)=7 TeV
• Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC
• Search for a new bottomonium state decaying to Upsilon(1S) pi+ pi- in pp collisions at sqrt(s) = 8 TeV
• Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at sqrt(s[NN]) = 2.76 TeV
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• Measurement of the Ratio of the 3-jet to 2-jet Cross Sections in pp Collisions at sqrt(s) = 7 TeV
• Topology classification with deep learning to improve real-time event selection at the LHC
• Measurement of dijet azimuthal decorrelation in pp collisions at sqrt(s) = 8 TeV
• Search for the exotic decay of the Higgs boson into two light pseudoscalars with four photons in the final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Azimuthal correlations for inclusive 2-jet, 3-jet, and 4-jet events in pp collisions at $\sqrt{s}=$ 13 TeV
• Search for supersymmetry in events with opposite-sign dileptons and missing transverse energy using an artificial neural network
• Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in pp collisions at $\sqrt{s}=$ 13 TeV
• Search for a new resonance decaying into two spin-0 bosons in a final state with two photons and two bottom quarks in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Search for jet extinction in the inclusive jet-pt spectrum from proton-proton collisions at sqrt(s) = 8 TeV
• Measurement of the Higgs boson production via vector boson fusion and its decay into bottom quarks in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Triggering at High Luminosity Colliders
• Jet Cross-Section Measurements In CMS
• Prompt photon production in photoproduction, DIS and hadronic collisions