Yang–Mills theories are an important building block of the standard model and in particular
of quantum chromodynamics. Its correlation functions describe the behavior of its …

We present py SecDec, a new version of the program SecDec, which performs the
factorization of dimensionally regulated poles in parametric integrals, and the subsequent …

A bstract We complete the analytic calculation of the full set of two-loop Feynman integrals
required for computation of massless five-particle scattering amplitudes. We employ the …

A bstract We compute the two-loop helicity amplitudes for the production of three photons at
hadron colliders in QCD at leading-color. Using the two-loop numerical unitarity method …

We investigate Landau gauge SU (3) Yang-Mills theory in a systematic vertex expansion
scheme for the effective action with the functional renormalization group. Particular focus is …

arXiv:1707.06453v1 [hep-ph] 20 Jul 2017 Form version 4.2 Page 1 arXiv:1707.06453v1 [hep-ph]
20 Jul 2017 Form version 4.2 B. Ruijla,b, T. Uedaa and JAM Vermaserena aNikhef Theory …

A bstract We present analytic results for all planar two-loop Feynman integrals contributing
to five-particle scattering amplitudes with one external massive leg. We express the integrals …

The purely numerical evaluation of multi-loop integrals and amplitudes can be a viable
alternative to analytic approaches, in particular in the presence of several mass scales …

We discuss the technique of expansion by regions from a geometric perspective, and its
implementation within py SecDec, a toolbox for the evaluation of dimensionally regulated …

We present nonperturbative first-principle results for quark, gluon, and meson 1PI correlation
functions of two-flavor Landau-gauge QCD in the vacuum. These correlation functions carry …