4 papers
Rationalizability of square roots
Marco Besier, Dino Festi
Feynman integral computations in theoretical high energy particle physics frequently involve square roots in the kinematic variables. Physicists often want to solve Feynman integra…
RationalizeRoots: Software Package for the Rationalization of Square Roots
Marco Besier, Pascal Wasser, Stefan Weinzierl
The computation of Feynman integrals often involves square roots. One way to obtain a solution in terms of multiple polylogarithms is to rationalize these square roots by a suitabl…
Arithmetic and geometry of a K3 surface emerging from virtual corrections to Drell--Yan scattering
Marco Besier, Dino Festi, Michael Harrison +1
We study a K3 surface, which appears in the two-loop mixed electroweak-quantum chromodynamic virtual corrections to Drell--Yan scattering. A detailed analysis of the geometric Pica…
Rationalizing roots: an algorithmic approach
Marco Besier, Duco van Straten, Stefan Weinzierl
In the computation of Feynman integrals which evaluate to multiple polylogarithms one encounters quite often square roots. To express the Feynman integral in terms of multiple poly…