====== TTP11-25 Low- and High-Energy Expansion of Heavy-Quark Correlators at Next-To-Next-To-Leading Order ====== We calculate three-loop corrections to correlation functions of heavy-quark currents in the low- and high-energy regions. We present 30 coefficients both in the low-energy and the high-energy expansion of the scalar and the vector correlator with non-diagonal flavour structure. In addition we compute 30 coefficients in the high-energy expansion of the diagonal vector, axial-vector, scalar and pseudo-scalar correlators. Possible applications of our new results are improvements of lattice-based quark-mass determinations and the approximate reconstruction of the full momentum dependence of the correlators. |**A. Maier, P. Marquard** | |** Nucl.Phys. B859 1-12 2012 ** | | {{preprints:2011:ttp11-25.pdf|PDF}} {{preprints:2011:ttp11-25.ps|PostScript}} [[http://arxiv.org/abs/1110.5581|arXiv]] [[http://ttp.kit.edu/Progdata/ttp11/ttp11-25|Programs and Data]] | | |