AI and the World's Hard Problems · Physics · arXiv · 2026-10-26
FeynFacet: AI agents for analytic NLO QCD
FeynFacet is a workflow in which AI agents develop and run programs for analytic next-to-leading-order (NLO) QCD calculations, with observables and conventions set by physicists. The authors use it to derive new analytic hard functions for single-inclusive transverse spin transfer in proton-proton and lepton-proton collisions. The results reproduce established cases and pass checks from gauge invariance, pole cancellation and renormalization-group evolution, and the coefficients and programs are published online.