title: Analytic Form of the Two-Loop Planar Five-Gluon All-Plus-Helicity Amplitude in QCD.
abstract: Virtual two-loop corrections to scattering amplitudes are a key ingredient to precision physics at collider experiments. We compute the full set of planar master integrals relevant to five-point functions in massless QCD, and use these to derive an analytical expression for the two-loop five-gluon all-plus-helicity amplitude. After subtracting terms that are related to the universal infrared and ultraviolet pole structure, we obtain a remarkably simple and compact finite remainder function, consisting only of dilogarithms.
authors.affiliation: Department of Physics, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
authors.forename: T
authors.initials: T
authors.lastname: Gehrmann
authors.affiliation: PRISMA Cluster of Excellence, Johannes Gutenberg University, 55099 Mainz, Germany.
authors.forename: J M
authors.initials: JM
authors.lastname: Henn
authors.affiliation: Department of Physics, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
authors.forename: N A
authors.initials: NA
authors.lastname: Lo Presti