Speaker
Fabian Wissbrock
(DESY)
Description
We present recent results on the 3-loop fermion-loop corrections
to the asymptotic heavy flavor Wilson coefficients of the structure
function $F_2(x,Q^2)$ in the asymptotic region $Q^2 \gg m^2$. This
includes results on contributions with two different masses $m_c, m_b$
which first emerge at 3-loop level. We also obtained first results on more
advanced toplogies of ladder- or benz-type using a method based on
hyperlogarithms, a generalization of harmonic polylogarithms.
