Quark and gluon form factors in four-loop QCD

Understand

We compute the photon-quark and Higgs-gluon form factors to four-loop order within massless perturbative Quantum Chromodynamics.

• Our results constitute ready-to-use building blocks for N${}^4$LO cross sections for Drell-Yan processes and gluon-fusion Higgs boson production at the LHC.
• We present complete analytic expressions for both form factors and show several of the most complicated master integrals.