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preprints:2000:ttp00-08 [2016/03/17 11:03] (current)
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 +====== TTP00-08 The three-loop on-shell renormalization of QCD and QED ====== 
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 +   <​hidden TTP00-08 ​ The three-loop on-shell renormalization of QCD and QED >   We describe a calculation of the on-shell renormalization factors in QCD  
 +   and QED at the three loop level. Explicit results for the fermion mass  
 +   ​renormalization factor Zm and the on-shell fermion wave function  
 +   ​renormalization constant Z2 are given. We find that at O(alpha_s^3) the 
 +   wave function renormalization constant Z2 in QCD becomes gauge dependent  
 +   also in the on-shell scheme, thereby disproving the ``gauge-independence''​  
 +   ​conjecture based on an earlier two-loop result. As a byproduct, we derive  
 +   an O(alpha_s^3) contribution to the anomalous dimension of the heavy quark  
 +   field in HQET.  
 + </​hidden>​ 
 +|**Kirill Melnikov and Timo van Ritbergen** ​ |  
 +|**  Nucl. Phys.  B591 515-546 2000  **  | 
 +| {{preprints:​2000:​ttp00-08.pdf|PDF}} {{preprints:​2000:​ttp00-08.ps|PostScript}} [[http://​arxiv.org/​abs/​hep-ph/​0005131|arXiv]] ​  | 
 +| |