Heavy Quark Vacuum Polarisation to Three Loops
Chetyrkin, K. G. · Kuehn, J. H. · Steinhauser, M.
Original · EN
The real and imaginary part of the vacuum polarisation function Π(q²) induced by a massive quark is calculated in perturbative QCD up to order αₛ². The method is described and the results are presented. This extends the calculation by Källén and Sabry from two to three loops.
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