John M. Campbell

activity

20242026

collaborators

4 papers

hep-ph2026

A portable implementation of one-loop Feynman integrals

Reet Barik, John M. Campbell, Taylor Childers +3

We present the first performance-portable implementation of a loop integral library for high-energy particle physics. The new code is based on the QCDLoop package, which provides a…

hep-ph2026

Double-real corrections to $e^{+} e^{-} \to q q ˉ$ with partial fractioned scalar radiators and identified particle kinematics mappings

John M. Campbell, Stefan Höche, Max Knobbe

We present a new approach to local infrared subtraction for next-to-next-to-leading order QCD calculations in $e^{+} e^{-} \to q q ˉ$ . Overlapping singularities in the multipole radia…

hep-ph2025

QCD splitting functions beyond kinematical limits

John M. Campbell, Stefan Höche, Max Knobbe +2

We present a systematic decomposition of QCD splitting functions into scalar dipole radiators and pure splitting remainders up to second order in the strong coupling. The individua…

hep-ph2024

Algorithms for numerically stable scattering amplitudes

Enrico Bothmann, John M. Campbell, Stefan Höche +1

The numerically stable evaluation of scattering matrix elements near the infrared limit of gauge theories is of great importance for the success of collider physics experiments. We…

A portable implementation of one-loop Feynman integrals

Double-real corrections to e+e−→qqˉ​ with partial fractioned scalar radiators and identified particle kinematics mappings

QCD splitting functions beyond kinematical limits

Algorithms for numerically stable scattering amplitudes

Double-real corrections to $e^{+} e^{-} \to q q ˉ$ with partial fractioned scalar radiators and identified particle kinematics mappings