Studies in the renormalization-prescription dependence of perturbative calculations
- 1 January 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 23 (1), 227-254
- https://doi.org/10.1103/physrevd.23.227
Abstract
Now that the quantitative testing of perturbative quantum chromodynamics (QCD) has become a major experimental and theoretical effort, it is important to understand the renormalization-prescription dependence of perturbative calculations. We stress the phenomenological importance of finding a definition of the QCD expansion parameter which reduces the magnitude of high-order corrections. We give explicit arguments suggesting that a choice of coupling based on momentum-space subtraction can be phenomenologically useful. Examples from QCD and QED are used to illustrate these arguments, and we also discuss possibilities for refining them.Keywords
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