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Accelerating LHC phenomenology with analytic one-loop amplitudes: A C++ interface to MCFM

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arxiv 2107.04472 v3 pith:TLLYUQ6L submitted 2021-07-09 hep-ph hep-ex

John M Campbell , Stefan Höche , Christian T Preuss This is my paper · ORCID
classification hep-phhep-ex
keywords one-loopamplitudesanalyticinterfacelargemcfmprecisionaccelerating
verification ladder T0 review T1 audit T2 compute T3 formal

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The evaluation of one-loop matrix elements is one of the main bottlenecks in precision calculations for the high-luminosity phase of the Large Hadron Collider. To alleviate this problem, a new C++ interface to the MCFM parton-level Monte Carlo is introduced, giving access to an extensive library of analytic results for one-loop amplitudes. Timing comparisons are presented for a large set of Standard Model processes. These are relevant for high-statistics event simulation in the context of experimental analyses and precision fixed-order computations.

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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. 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.

  2. Analytic reconstruction with massive particles: one-loop amplitudes for $0 \to \bar{q}qt\bar{t}H$

    hep-ph 2025-04 accept novelty 6.0 of 10

    First analytic reconstruction of the one-loop amplitude for 0 to anti-q, q, top, anti-top, Higgs using massive spinor-helicity, with expressions about twice as fast as the automatic code OpenLoops.

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