Higher logarithms and $\varepsilon$-poles for the MS-like renormalization prescriptions
Abstract
We consider a version of dimensional regularization (reduction) in which the dimensionful regularization parameter is in general different from the renormalization scale . Then in the scheme analogous to the minimal subtraction the renormalization constants contain -poles, powers of , and mixed terms of the structure . For the MS-like schemes we present explicit expressions for the coefficients at all these structures which relate them to the coefficients in the renormalization group functions, namely in the -function and in the anomalous dimension. In particular, for the pure -poles we present explicit solutions of the 't~Hooft pole equations. Also we construct simple all-loop expressions for the renormalization constants (also written in terms of the renormalization group functions) which produce all -poles and logarithms and establish a number of relations between various coefficients at -poles and logarithms. The results are illustrated by some examples.
Keywords
Cite
@article{arxiv.2310.05610,
title = {Higher logarithms and $\varepsilon$-poles for the MS-like renormalization prescriptions},
author = {Nikolai Meshcheriakov and Victoria Shatalova and Konstantin Stepanyantz},
journal= {arXiv preprint arXiv:2310.05610},
year = {2023}
}
Comments
47 pages, the version accepted for publication in JHEP