A new method extends shower Monte Carlo algorithms to add NLO QCD corrections to the hardest emission while avoiding negative event weights.
Matrix-Element Corrections to Parton Shower Algorithms
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abstract
We discuss two ways in which parton shower algorithms can be supplemented by matrix-element corrections to ensure the correct hard limit: by using complementary phase-space regions, or by modifying the shower itself. In the former case, existing algorithms are self-consistent only if the total correction is small. In the latter case, existing algorithms are never self-consistent, a problem that is particularly severe for angular-ordered parton shower algorithms. We show how to construct self-consistent algorithms in both cases. The postscript file for this paper can also be obtained by anonymous ftp from thep.lu.se in the file pub/Preprints/lu_tp_94_17.ps
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UNVERDICTED 4representative citing papers
A reweighting method is introduced to efficiently study and tune MPI and CR parameter variations in Sherpa using relative weights, demonstrated with LHC and Tevatron data.
Herwig 7 now supports NLO POWHEG-matched polarized DIS including neutral and charged currents, with spin-density matrix propagation that affects some shower observables but not others.
The paper provides a detailed physics and user manual for the PYTHIA 8.3 Monte Carlo event generator used in high-energy physics.
citing papers explorer
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A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
A new method extends shower Monte Carlo algorithms to add NLO QCD corrections to the hardest emission while avoiding negative event weights.
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Reweighting Underlying Event and Colour Reconnection parameter variations in Sherpa
A reweighting method is introduced to efficiently study and tune MPI and CR parameter variations in Sherpa using relative weights, demonstrated with LHC and Tevatron data.
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Polarized Deep-Inelastic Scattering with Spin Correlations in Herwig 7
Herwig 7 now supports NLO POWHEG-matched polarized DIS including neutral and charged currents, with spin-density matrix propagation that affects some shower observables but not others.
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A comprehensive guide to the physics and usage of PYTHIA 8.3
The paper provides a detailed physics and user manual for the PYTHIA 8.3 Monte Carlo event generator used in high-energy physics.