Heavy flavor operator matrix elements at $O(a_s^3)$
Isabella Bierenbaum, Johannes Blümlein A, Klein, S. · arXiv (Cornell University) · 2008
The heavy quark effects in deep--inelastic scattering in the asymptotic regime $Q^2 \gg m^2$ can be described by heavy flavor operator matrix elements. Complete analytic expressions for these objects are currently known to ${\sf NLO}$. We present first results for fixed moments at ${\sf NNLO}$. This involves a recalculation of fixed moments of the corresponding ${\sf NNLO}$ anomalous dimensions, which we thereby confirm.