460 citations · 955 across the 22 of their papers we have counts for
22 papers
A Few Lessons from pQCD Analysis at Low Energies
D. V. Shirkov
Motivated by the recent 4-loop analysis of the JLab data on Bjorken Sum Rule, where the pQCD series seems to blow up at $|Q|\lesssim 1.5\,\GeV, α_s \gtrsim 0.33\,,$ we overview the…
Four-loop QCD analysis of the Bjorken sum rule vs data
V. L. Khandramai, R. S. Pasechnik, D. V. Shirkov +2
We study the polarized Bjorken sum rule at low momentum transfers in the range with the four-loop NLO expression for the coefficient function $C_{\rm Bj…
Inevitability and Importance of Non-Perturbative Elements in Quantum Field Theory
Alexander P. Bakulev, Dmitry V. Shirkov
The subject of the first section-lecture is concerned with the strength and the weakness of the perturbation theory (PT) approach, that is expansion in powers of a small parameter…
Nucleon spin structure and pQCD frontier on the move
Roman S. Pasechnik, Dmitry V. Shirkov, Oleg V. Teryaev +2
The interplay between higher orders of the perturbative QCD (pQCD) expansion and higher-twist contributions in the analysis of recent Jefferson Lab data on the lowest moment of the…
Bjorken Sum Rule and pQCD frontier on the move
Roman S. Pasechnik, Dmitry V. Shirkov, Oleg V. Teryaev
The reasonableness of the use of perturbative QCD notions in the region close to the scale of hadronization, i.e., below $\lesssim 1 \GeV$ is under study. First, the interplay betw…
Large regular QCD coupling at Low Energy?
Dmitry Shirkov
The issue is the expediency of the QCD notions use in the low energy region down to the confinement scale, and, in particular, the efficacy of the QCD invariant coupling \barα_s(Q^…