A practical Seedless Infrared-Safe Cone jet algorithm

Abstract

Current cone jet algorithms, widely used at hadron colliders, take event particles as seeds in an iterative search for stable cones. A longstanding infrared (IR) unsafety issue in such algorithms is often assumed to be solvable by adding extra `midpoint' seeds, but actually is just postponed to one order higher in the coupling. A proper solution is to switch to an exact seedless cone algorithm, one that provably identifies all stable cones. The only existing approach takes N 2^N time to find jets among N particles, making it unusable at hadron level. This can be reduced to N^2 ln(N) time, leading to code (SISCone) whose speed is similar to that of public midpoint implementations. Monte Carlo tests provide a strong cross-check of an analytical proof of the IR safety of the new algorithm, and the absence of any 'R_{sep}' issue implies a good practical correspondence between parton and hadron levels. Relative to a midpoint cone, the use of an IR safe seedless algorithm leads to modest changes for inclusive jet spectra, mostly through reduced sensitivity to the underlying event, and significant changes for some multi-jet observables.

42 pages, 11 figures. SISCone, the C++ implementation of the algorithm, is available at http://projects.hepforge.org/siscone/ (standalone), http://www.lpthe.jussieu.fr/~salam/fastjet/ (FastJet plugin). v2: FastJet URL corrected

References in corpus (28)

• HERWIG 6.5: an event generator for Hadron Emission Reactions With Interfering Gluons (including supersymmetric processes)
• High-Energy-Physics Event Generation with PYTHIA 6.1
• Dispelling the N^3 myth for the Kt jet-finder
• Successive Combination Jet Algorithm For Hadron Collisions
• Better Jet Clustering Algorithms
• Next-to-leading order calculation of three-jet observables in hadron-hadron collision
• Resummation of non-global QCD observables
• Next-to-leading order corrections to W+2 jet and Z+2 jet production at hadron colliders
• Hard Interactions of Quarks and Gluons: a Primer for LHC Physics
• Three-jet cross sections in hadron-hadron collisions at next-to-leading order
• Principles of general final-state resummation and automated implementation
• A Portable High-Quality Random Number Generator for Lattice Field Theory Simulations
• Antenna subtraction with hadronic initial states
• Away-from-jet energy flow
• Threshold Resummation for Dijet Cross Sections
• Large Jets at Hadron Colliders at Order ${\alpha }_s^3$: A Look Inside
• Super-leading logarithms in non-global observables in QCD?
• Accounting for coherence in interjet E_t flow: a case study
• Jet Shapes in Hadron Collisions: Higher Orders, Resummation and Hadronization
• Infrared Safe but Infinite: Soft-Gluon Divergences Inside the Physical Region
• Non-global logarithms in inter-jet energy flow with kt clustering requirement
• On QCD resummation with kt clustering
• t' at the LHC: the physics of discovery
• Problems in resumming interjet energy flows with k_t clustering
• Measurement of the Inclusive Jet Cross Section using the Kt algorithm in pp-bar Collisions at sqrt(s) = 1.96 TeV
• Generalized resummation of QCD final-state observables
• The Inclusive Jet Cross Section in ppbar Collisions at sqrt{s}=1.8 TeV using the kT Algorithm
• A Comparison of two different jet algorithms for the top mass reconstruction at the LHC

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• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
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• Quantum Computing for High-Energy Physics: State of the Art and Challenges. Summary of the QC4HEP Working Group
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• Studies of W boson plus jets production in p\bar{p} collisions at sqrt(s)=1.96 TeV
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• Annihilation decays of bound states at the LHC
• Charged jet cross sections and properties in proton-proton collisions at $\sqrt{s}=7$ TeV
• Rest Frame Subjet Algorithm With SISCone Jet For Fully Hadronic Decaying Higgs Search
• Measurements of inclusive W+jets production rates as a function of jet transverse momentum in ppbar collisions at sqrt{s}=1.96 TeV
• Perturbative QCD description of jet data from LHC Run-I and Tevatron Run-II
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• Conformal Colliders Meet the LHC
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• Stau as the Lightest Supersymmetric Particle in R-Parity Violating SUSY Models: Discovery Potential with Early LHC Data
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• Analytic Calculation of 1-Jettiness in DIS at $\mathcal{O}({\alpha }_s)$
• Vector Boson + Jets with BlackHat and Sherpa
• Three-Prong Distribution of Massive Narrow QCD Jets
• Quantum Annealing for Jet Clustering with Thrust
• Leading jets and energy loss
• Distinguishing spins at the LHC using bound state signals
• Factorization of the dijet cross section in electron-positron annihilation with jet algorithms
• Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV
• On the universality of hadronisation corrections to QCD jets
• Access to Photon Fragmentation Functions in Hadronic Jet Production
• MadAnalysis 5: status and new developments
• Measurement of three-jet differential cross sections d sigma-3jet / d M-3jet in p anti-p collisions at sqrt(s)=1.96 TeV
• Jet vetoing and Herwig++
• Weak Vector Boson Production with Many Jets at the LHC $\sqrt{s}=13$ TeV
• Dijet angular distributions at $\sqrt{s}=14$ TeV
• Two jets and missing $E_T$ signature to determine the spins of the new particles
• The matrix element method at next-to-leading order for arbitrary jet algorithms
• Evaluating Results from the Relativistic Heavy Ion Collider with Perturbative QCD and Hydrodynamics
• The mass area of jets
• Optimal jet radius in kinematic dijet reconstruction
• Extrapolating W-Associated Jet-Production Ratios at the LHC
• Next-to-leading Order Calculation for Jets Defined by a Maximized Jet Function
• Two-loop anomalous dimensions for small-$R$ jet versus hadronic fragmentation functions
• Jet Physics at the Tevatron
• Separated at Birth: Jet Maximization, Axis Minimization, and Stable Cone Finding
• 1-jettiness with jet axis at $O({\alpha }_s)$ in jeep inelastic scattering
• NNDrone: a toolkit for the mass application of machine learning in High Energy Physics
• Vetoed jet clustering: The mass-jump algorithm
• A Short Review on Jet Identification
• Dijet Invariant Mass Distribution in Top Quark Hadronic Decay with QCD Corrections
• Studies of Quantum Chromodynamics at the LHC
• Prospects for Observing the Standard Model Higgs Boson Decaying into b\bar{b} Final States Produced in Weak Boson Fusion with an Associated Photon at the LHC
• Studies of correlations between measurements of jet observables
• Charged particle jet measurements with the ALICE experiment in proton-proton collisions at the LHC
• Recent QCD results from the Tevatron
• The SISCone jet algorithm optimised for low particle multiplicities
• Precision jet measurements at HERA and determination of α_s
• Analytical structure of k${}_t$ clustering to any order
• Analysis of exclusive $k_T$ jet algorithms in electron-positron annihilation
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• Strangeness production in jets from p+p \sqrt{s} = 200 GeV collisions
• Measurement of jet fragmentation in p + p collision at sqrt(s) = 200 GeV with the PHENIX detector