A framework for second-order parton showers
arXiv:1611.00013 · doi:10.1016/j.physletb.2017.05.011
Abstract
A framework is presented for including second-order perturbative corrections to the radiation patterns of parton showers. The formalism allows to combine O(alphaS^2)-corrected iterated 2->3 kernels for "ordered" gluon emissions with tree-level 2->4 kernels for "unordered" ones. The combined Sudakov evolution kernel is thus accurate to O(alphaS^2). As a first step towards a full-fledged implementation of these ideas, we develop an explicit implementation of 2->4 shower branchings in this letter.
11 pages, 3 figures
References in corpus (27)
- An Introduction to PYTHIA 8.2
- A parton shower algorithm based on Catani-Seymour dipole factorisation
- A critical appraisal of NLO+PS matching methods
- Antenna Subtraction at NNLO
- Transverse-Momentum-Ordered Showers and Interleaved Multiple Interactions
- A simple shower and matching algorithm
- Antenna Factorization of Gauge-Theory Amplitudes
- Parton showers with quantum interference
- Coherent Parton Showers with Local Recoils
- The midpoint between dipole and parton showers
- Lambert W Function for Applications in Physics
- Combining Higher-Order Resummation with Multiple NLO Calculations and Parton Showers in GENEVA
- Higher-Order Corrections to Timelike Jets
- Matching Parton Showers to NLO Computation
- Vincia for Hadron Colliders
- Parton showers from the dipole formalism
- A parton shower based on factorization of the quantum density matrix
- Antenna Showers with One-Loop Matrix Elements
- Initial-state showering based on colour dipoles connected to incoming parton lines
- Antenna Showers with Hadronic Initial States
- Fooling Around with the Sudakov Veto Algorithm
- Having Fun with Lambert W(x) Function
- Timelike Dipole-Antenna Showers with Massive Fermions
- Inclusion of the QCD next-to-leading order corrections in the quark-gluon Monte Carlo shower
- Efficient Matrix-Element Matching with Sector Showers
- Some remarks on dipole showers and the DGLAP equation
- On the dependence of QCD splitting functions on the choice of the evolution variable
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- Analyzing N-point Energy Correlators Inside Jets with CMS Open Data
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- Leading-color fully differential two-loop soft corrections to QCD dipole showers
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- Celestial Blocks and Transverse Spin in the Three-Point Energy Correlator
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- Measuring QCD Splittings with Invertible Networks
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- What is a parton shower?
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- Vector Boson Scattering Processes: Status and Prospects
- Factorization and Resummation for Groomed Multi-Prong Jet Shapes
- Towards NNLO+PS Matching with Sector Showers
- Sector Showers for Hadron Collisions
- The role of colour flows in matrix element computations and Monte Carlo simulations
- Disentangling soft and collinear effects in QCD parton showers
- Combining states without scale hierarchies with ordered parton showers
- A general algorithm to build real-radiation antenna functions for higher-order calculations
- Helicity Antenna Showers for Hadron Colliders
- Non-Gaussianities in Collider Energy Flux
- A general algorithm to build mixed real and virtual antenna functions for higher-order calculations
- Colour Evolution and Infrared Physics
- Dissecting the collinear structure of quark splitting at NNLL
- Initial-Final and Initial-Initial antenna functions for real radiation at next-to-leading order
- Systematic Quark/Gluon Identification with Ratios of Likelihoods
- Logarithmically-accurate and positive-definite NLO shower matching
- Decomposition of Triple Collinear Splitting Functions
- Colour Rearrangement for Dipole Showers
- A parton shower generator based on the GLR equation
- Resampling Algorithms for High Energy Physics Simulations
- Measurements of Lund subjet multiplicities in 13 TeV proton-proton collisions with the ATLAS detector
- How much joint resummation do we need?
- Sudakov evolution without unitarity
- Coloring mixed QCD/QED evolution