Abstract: Two-loop non-planar master integrals are needed for the NNLO QCD
corrections to diphoton and dijet production at hadron colliders. The
top-sector topology contains an internal massive fermion loop and is known
to contain elliptic curves. In this talk, I will first review the method of
differential equations, and then discuss how to derive an ε-factorized
differential equation for the elliptic sector within the Feynman integral
family. To do so, I will explain how information from geometry can help to
deal with the complexity of this multiscale problem. I will finally conclude
with some outlooks.
