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

Abstract

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.

arXiv commentRevised version submitted to EPJC; contains new section on numerical stability

References in corpus (65)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• An Introduction to PYTHIA 8.2
• FastJet user manual
• Event generation with SHERPA 1.1
• Scattering Amplitudes with Open Loops
• An update on vector boson pair production at hadron colliders
• Comix, a new matrix element generator
• Event Generation with Sherpa 2.2
• QCD matrix elements + parton showers: The NLO case
• Vector boson pair production at the LHC
• A critical appraisal of NLO+PS matching methods
• OpenLoops 2
• One-Loop Amplitudes for e^+ e^- to Four Partons
• An Automated Implementation of On-Shell Methods for One-Loop Amplitudes
• Automation of one-loop QCD corrections
• Isolated photons in perturbative QCD
• Predictions for all processes e^+e^- -> 4 fermions + gamma
• Automated One-Loop Calculations with GoSam
• GoSam-2.0: a tool for automated one-loop calculations within the Standard Model and beyond
• Precise Predictions for W + 4 Jet Production at the Large Hadron Collider
• Color singlet production at NNLO in MCFM
• Automatic evaluation of UV and R2 terms for beyond the Standard Model Lagrangians: a proof-of-principle
• RECOLA: REcursive Computation of One-Loop Amplitudes
• A Roadmap for HEP Software and Computing R&D for the 2020s
• MHV Rules for Higgs Plus Multi-Gluon Amplitudes
• Next-to-Leading Order QCD Predictions for W+3-Jet Distributions at Hadron Colliders
• Recola2: REcursive Computation of One-Loop Amplitudes 2
• Automated one-loop computations in the SMEFT
• Recursive generation of one-loop amplitudes in the Standard Model
• Numerical evaluation of virtual corrections to multi-jet production in massless QCD
• A proposal for a standard interface between Monte Carlo tools and one-loop programs
• On-the-fly reduction of open loops
• Predictions for diphoton production at the LHC through NNLO in QCD
• Next-to-Leading Order QCD Predictions for Z,gamma^*+3-Jet Distributions at the Tevatron
• Helicity Amplitudes for $\mathcal{O}({\alpha }_s)$ Production of $W^{+}{W}^{-},W^{\pm }Z,ZZ,W^{\pm }\gamma ,$ or $Z\gamma$ Pairs at Hadron Colliders
• Next-to-Leading Order W + 5-Jet Production at the LHC
• Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs
• Direct photon production at next-to-next-to-leading order
• Precision phenomenology with MCFM
• Associated production of a Higgs boson at NNLO
• Precise Predictions for Z + 4 Jets at Hadron Colliders
• Reweighting QCD matrix-element and parton-shower calculations
• NGluon: A Package to Calculate One-loop Multi-gluon Amplitudes
• Challenges in Monte Carlo event generator software for High-Luminosity LHC
• H-->ggg(gqqbar) at Two Loops in the Large-M_t Limit
• One-loop phi-MHV amplitudes using the unitarity bootstrap
• Analytic one-loop amplitudes for a Higgs boson plus four partons
• One-loop Higgs plus four gluon amplitudes: Full analytic results
• Antenna Showers with One-Loop Matrix Elements
• Simulation of vector boson plus many jet final states at the high luminosity LHC
• Automation of NLO QCD and EW corrections with Sherpa and Recola
• NLO electroweak corrections in extended Higgs Sectors with RECOLA2
• Virtual QCD corrections to Higgs boson plus four parton processes
• Analytic results for the one-loop NMHV Hqqgg amplitude
• One-loop phi-MHV amplitudes using the unitarity bootstrap: the general helicity case
• One-loop helicity amplitudes for H -> gluons: the all-minus configuration
• Triphoton production at hadron colliders
• Sector Showers for Hadron Collisions
• Resummed predictions for jet-resolution scales in multijet production in $e^{+}{e}^{-}$ annihilation
• The one-loop amplitudes for Higgs + 4 partons with full mass effects
• Top-quark loop corrections in Z+jet and Z+2 jet production
• Monte Carlo event generators for high energy particle physics event simulation
• Four photon production at the LHC: an application of 2->4 analytic unitarity
• On Higgs boson plus gluon amplitudes at one loop

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• Accelerating Monte Carlo event generation -- rejection sampling using neural network event-weight estimates
• Event Generators for High-Energy Physics Experiments
• Towards NNLO+PS Matching with Sector Showers
• Efficient phase-space generation for hadron collider event simulation
• Accelerating LHC event generation with simplified pilot runs and fast PDFs
• A Portable Parton-Level Event Generator for the High-Luminosity LHC
• Non-local slicing approaches for NNLO QCD in MCFM
• Vector boson pair production at one loop: analytic results for the process $q\bar{q}\ell \bar{\ell }{\ell }^{\prime }{\bar{\ell }}^{\prime }g$
• Towards a Fully Automated Differential ${\text{NNLO}}_{\text{EW}}$ Generator for Lepton Colliders
• Multiprocess imaging of nuclear modifications on parton distributions in proton-nucleus collisions