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A modified CKKW matrix element merging approach to angular-ordered parton showers

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arxiv 0905.3072 v1 pith:D5DMHY5R submitted 2009-05-19 hep-ph

Keith Hamilton , Peter Richardson , Jon Tully This is my paper · ORCID
classification hep-ph
keywords partonmatrixmergingalgorithmangular-orderedckkwelementmodified
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A modified version of the CKKW matrix element merging algorithm is presented, suitable for use in an angular-ordered parton shower, using truncated showers and forced splittings. The algorithm is implemented in the Herwig++ Monte Carlo event generator for the benchmark process e+e- -> hadrons. Results are presented at parton and hadron levels, demonstrating a smooth merging between the matrix elements and parton shower and an improved description of LEP data.

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  1. Recoil-Safe Subtraction, Matching and Merging in e+e- to hadrons

    hep-ph 2025-07 conditional novelty 6.0 of 10

    The Alaric shower is matched to NLO matrix elements and merged to five jets in e+e- to hadrons, with new analytic subtraction terms validated against Catani-Seymour subtraction.

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