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+====== TTP09-18 Low energy moments of heavy quark current correlators at four loops ======
+      <hidden TTP09-18  Low energy moments of heavy quark current correlators at four loops > We describe several techniques for the calculation of multi-loop
+ integrals and their application to heavy quark current correlators. As
+ new results, we present the four-loop correction to the second and third
+ physical moment in the low-energy expansions of vector, axial-vector and
+ scalar quark current correlators. Using a Ward identity, we obtain the
+ third and fourth moment for the pseudo-scalar correlator. We briefly
+ discuss the impact of these results on the determination of the charm
+ quark mass and the strong coupling constant using lattice simulations
+ for the current correlators and of the charm- and bottom-quark mass from
+ experimental data for &sigma;(e<sup>+</sup> e<sup>-</sup> &rarr; hadrons).
+ </hidden>
+|**A. Maier, P. Maierh&ouml;fer, P. Marquard, A.V. Smirnov**  |
+|**  Nuclear Physics  B 824 1-18 2010  **  |
+| {{preprints:2009:ttp09-18.pdf|PDF}} {{preprints:2009:ttp09-18.ps|PostScript}} [[http://arxiv.org/abs/0907.2117|arXiv]] [[http://ttp.kit.edu/Progdata/ttp09/ttp09-18|Programs and Data]]   |
+| |