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Speeding up MadGraph5_aMC@NLO

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arxiv 2102.00773 v3 pith:GJIHVX4P submitted 2021-02-01 hep-ph

classification hep-ph
keywords speed-upmadgraph5processescomputationdescribedesigneddubbedelement
verification ladder T0 review T1 audit T2 compute T3 formal
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In this paper we will describe two new optimisations implemented in MadGraph5_aMC@NLO, both of which are designed to speed-up the computation of leading-order processes (for any model). First we implement a new method to evaluate the squared matrix element, dubbed helicity recycling, which results in factor of two speed-up. Second, we have modified the multi-channel handling of the phase-space integrator providing tremendous speed-up for VBF-like processes (up to thousands times faster).

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Cited by 3 Pith papers

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

  1. Scattering Amplitudes as Programs: Self-Evolving Search for Theory and Event Generation

    hep-ph 2026-07 accept novelty 7.0 of 10

    Self-evolving program search over scattering amplitudes discovers known and hybrid evaluation structures, cutting counted arithmetic ~48x and reaching within ~14x of optimized MadGraph at n=6 while beating the tested ...

  2. Filling the Gap: Hunting for Vector Bosons at the MUonE Experiment with Displaced Decay Signature

    hep-ph 2025-11 conditional novelty 6.0 of 10

    MUonE's displaced-vertex search, combining muon-electron and muon-nucleus production, could probe vector-boson mediators up to ~150 MeV and close a documented parameter-space gap.

  3. Data-parallel leading-order event generation in MadGraph5_aMC@NLO

    hep-ph 2025-07 conditional novelty 6.0 of 10

    CUDACPP gives MadGraph data-parallel helicity amplitudes, delivering linear SIMD CPU speed-ups and up to order-of-magnitude GPU speed-ups for high-multiplicity QCD event generation.

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