Since we constantly evaluate the amplitude in infrared phase-space regions, we find that double precision is usually insufficient

From the difference between the expected, obtained rescaled amplitude values, we can estimate the number of correct digits · 2021

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hep-ph · 2026-04-14 · unverdicted · novelty 7.0

N³LO QCD predictions for photon-pair production are presented, demonstrating perturbative convergence.

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Next-to-next-to-next-to-leading order QCD corrections to photon-pair production hep-ph · 2026-04-14 · unverdicted · none · ref 4
N³LO QCD predictions for photon-pair production are presented, demonstrating perturbative convergence.