Event Generation from Effective Field Theory
arXiv:hep-ph/0607296 · doi:10.1103/PhysRevD.76.074004
Abstract
A procedure is developed for using Soft Collinear Effective Theory (SCET) to generate fully exclusive events, which can then be compared to data from collider experiments. We show that SCET smoothly interpolates between QCD for hard emissions, and the parton shower for soft emissions, while resumming all large logarithms. In SCET, logarithms are resummed using the renormalization group, instead of classical Sudakov factors, so subleading logarithms can be resummed as well. In addition, all loop effects of QCD can be reproduced in SCET, which allows the effective theory to incorporate next-to-leading and higher-order effects. We also show through SCET that in the soft/collinear limit, successive branchings factorize, a fact which is essential to parton showers, and that the splitting functions of QCD are reproduced. Finally, combining these results, we present a example of an algorithm that incorporates the SCET results into an event generator which is systematically improvable.
42 pages, 3 figures
References in corpus (34)
- PYTHIA 6.4 Physics and Manual
- PYTHIA 6.2 Physics and Manual
- A General Algorithm for Calculating Jet Cross Sections in NLO QCD
- An effective field theory for collinear and soft gluons: heavy to light decays
- Soft-Collinear Factorization in Effective Field Theory
- QCD Matrix Elements + Parton Showers
- Summing Sudakov logarithms in B -> X_s + gamma in effective field theory
- Three-jet cross sections to next-to-leading order
- Invariant Operators in Collinear Effective Theory
- Matching NLO QCD and parton showers in heavy flavour production
- Higher Order Corrections to Jet Cross Sections in Hadron Colliders
- SHERPA 1.alpha, a proof-of-concept version
- Correcting the Colour-Dipole Cascade Model with Fixed Order Matrix Elements
- Matrix Elements and Parton Showers in Hadronic Interactions
- New formalism for QCD parton showers
- A new method for real radiation at NNLO
- Deep inelastic scattering as x -> 1 using soft-collinear effective theory
- Infrared Structure of jets at NNLO
- Matching Matrix Elements and Parton Showers with HERWIG and PYTHIA
- Matrix-Element Corrections to Parton Shower Algorithms
- QCD Radiation off Heavy Particles
- W Production in an Improved Parton-Shower Approach
- Matching Parton Showers to NLO Computation
- Real radiation at NNLO: e^+e^- to 2 jets through O(alpha_s^2)
- Comment on Quark Masses in SCET
- Implementing the ME+PS merging algorithm
- Soft gluons and gauge-invariant subtractions in NLO parton-shower Monte Carlo event generators
- Resumming the color-octet contribution to radiative Upsilon decay
- Improving jet distributions with effective field theory
- Combining Monte Carlo generators with next-to-next-to-leading order calculations: event reweighting for Higgs boson production at the LHC
- Phase space veto method for next-to-leading order event generators in hadronic collisions
- Combining Parton Showers with Next-to-Leading Order QCD Matrix Elements in Deep-Inelastic eP Scattering
- Next-to-leading order QCD calculations with parton showers I: collinear singularities
- Next-to-leading order QCD calculations with parton showers II: soft singularities
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- The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
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- WHIZARD: Simulating Multi-Particle Processes at LHC and ILC
- On the Structure of Infrared Singularities of Gauge-Theory Amplitudes
- Quantum Simulation for High Energy Physics
- Jet Shapes and Jet Algorithms in SCET
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- Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report
- Factorization of e+e- Event Shape Distributions with Hadronic Final States in Soft Collinear Effective Theory
- Parton showers with quantum interference
- Resummation of heavy jet mass and comparison to LEP data
- Resummation and NLO Matching of Event Shapes with Effective Field Theory
- Hard-Soft-Collinear Factorization to All Orders
- Studies of jet mass in dijet and W/Z + jet events
- Factorization and Resummation for Dijet Invariant Mass Spectra
- Calculating the Charge of a Jet
- Non-Global Logarithms, Factorization, and the Soft Substructure of Jets
- Parton showers from the dipole formalism
- Effective Predictions of Event Shapes: Factorized, Resummed, and Gapped Angularity Distributions
- Reparameterization Invariant Collinear Operators
- An -Matrix for Massless Particles
- Consistent Factorization of Jet Observables in Exclusive Multijet Cross-Sections
- On the reduction of negative weights in MC@NLO-type matching procedures
- Factorization and Resummation for Generic Hierarchies between Jets
- Phase Space and Jet Definitions in SCET
- GenEvA (I): A new framework for event generation
- An Analytic Initial-State Parton Shower
- Automated simulations beyond the Standard Model: supersymmetry
- An on-shell approach to factorization
- Recent results on unintegrated parton distributions
- Gaining analytic control of parton showers
- Universal Nonperturbative Effects in Event Shapes from Soft-Collinear Effective Theory
- Systematic Improvement of Parton Showers with Effective Theory
- Streamlining resummed QCD calculations using Monte Carlo integration
- Precision on the top mass
- At the Frontier of Precision QCD in the LHC Era
- Jet Physics from Static Charges in AdS