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Next-to-Leading-Order Event Generators

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arxiv 1202.1251 v1 pith:4P23IAND submitted 2012-02-06 hep-ph hep-ex

Paolo Nason , Bryan Webber This is my paper · ORCID
classification hep-phhep-ex
keywords methodspartonshowernext-to-leading-ordertheoryaccuracyachieveachievements
verification ladder T0 review T1 audit T2 compute T3 formal
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We review the methods developed for combining the parton shower approximation to QCD with fixed-order perturbation theory, in such a way as to achieve next-to-leading-order (NLO) accuracy for inclusive observables. This has made it possible to generate fully-simulated hadronic final states with the precision and stability of NLO calculations. We explain the underlying theory of the existing methods, MC@NLO and POWHEG, together with their similarities, differences, achievements and limitations. For illustration we mainly compare results on Higgs boson production at the LHC, with particular emphasis on the residual uncertainties arising from the different treatment of effects beyond NLO. We also briefly summarize the difference between these NLO + parton shower methods and matrix-element + parton shower matching, and current efforts to combine the two approaches.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Herwig 7 with the Lund String Model: Tuning and Comparative Hadronization Studies

    hep-ph 2025-09 conditional novelty 5.0 of 10

    A Lund string model tune inside Herwig 7, the LH Tune, gives competitive descriptions of many LEP and LHC observables and enables fixed-shower comparison of string vs cluster hadronization.

  2. Heavy-quark pair-production in DIS at NLO QCD matched to a parton shower

    hep-ph 2026-06 unverdicted novelty 4.0 of 10

    NLO QCD heavy-quark pair production in DIS matched to parton shower in POWHEG, gluon-initiated channel only, with virtual correction validation via massification.

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