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 — preprints:1995:ttp95-41 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP95-41 Heavy Quark Vacuum Polarization to Three Loops   ​====== + + + <​hidden TTP95-41 ​ Heavy Quark Vacuum Polarization to Three Loops   > The real and imaginary part of the vacuum polarization function + ​$\Pi(q^2)$ induced by a massive quark is calculated in perturbative + QCD up to order $\alpha_s^2$. The method is described and the + ​results are presented. This extends the calculation by + ​K\"​all\'​en and Sabry from two to three loops. + ​ + |**K.G. Chetyrkin, J.H. Kuehn, M. Steinhauser** ​ | + |** Phys. Lett. B371 93-98 1996  **  | + | {{preprints:​1995:​ttp95-41.pdf|PDF}} {{preprints:​1995:​ttp95-41.ps|PostScript}} [[http://​arxiv.org/​abs/​hep-ph/​9511430|arXiv]] ​  | + | |