Speaker
Andrey Kataev
(INR RAS)
Description
We discuss generalizations of the Brodsky–Lepage–Mackenzie optimization procedure for renormalization group invariant quantities. In this respect, we discuss in detail the features and construction of the {β}-expansion presentation instead of the standard perturbative series with regard to the Adler D- function and Bjorken polarized sum rules S obtained in the order of $O(α_s^4)$. Based on the {β}-expansion, we analyze different schemes of optimization, numerically illustrating their results
Author
Andrey Kataev
(INR RAS)
Co-author
Sergey Mikhailov
(Joint Institute for Nuclear Research)
