https://doi.org/10.1140/epjc/s2006-02610-y
Theoretical Physics
Four-loop moments of the heavy quark vacuum polarization function in perturbative QCD
1
Institut für Theoretische Teilchenphysik, Universität Karlsruhe, 76128, Karlsruhe, Germany
2
Dipartimento di Fisica Teorica, Università di Torino and INFN, 10125, Torino, Italy
* e-mail: chet@particle.physik.uni-karlsruhe.de
Received:
2
May
2006
Published online:
29
August
2006
New results at four-loop order in perturbative QCD for the first two Taylor coefficients of the heavy quark vacuum polarization function are presented. They can be used to perform a precise determination of the charm- and bottom-quark mass. Implications for the value of the quark masses are briefly discussed.
© Springer-Verlag Berlin Heidelberg, 2006
