Speaker
Arnd Behring
(CERN)
Description
We calculate four-loop QCD corrections to the rho parameter with a non-vanishing b-quark mass. Previously, it was observed at three-loop order that elliptic integrals contribute to this observable. This prompts the question which classes of functions appear at the next order. We report on the results of our calculation with a focus on the mathematical structures that emerge at four loops.
Primary author
Arnd Behring
(CERN)
