Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 48, Issue 1, Pages 107-110Publisher
SPRINGER
DOI: 10.1140/epjc/s2006-02610-y
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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.
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