...
机译:Heavy-quark QCD vacuum polarisation function: analytical results at four loops
Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg, Germany;
quantum chromo-dynamics; multi-loop calculations; hadron production; e(+)e(-) interactions; total cross sections; ONE NONZERO MASS; DIFFERENTIAL-EQUATIONS METHOD; VERTEX-TYPE DIAGRAMS; RESONANCE PHYSICS; FEYNMAN DIAGRAMS; SUM-RULES; ENERGY;