Properties of the running coupling constant of strong interaction at low energies

Âderna Fìzika ta Energetika

V. A. Babenko¹  N. M. Petrov¹ 

[1] Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine;

关键词: quantum chromodynamics (QCD);    coupling constant of strong interaction;    QCD perturbation theory;    renormali-zation group equation of QCD.;   

DOI  :  https://doi.org/10.15407/jnpae2019.01.005

来源: DOAJ

【 摘 要 】

Quantum chromodynamics (QCD) running coupling constant and its dependence on the energy scale renormalization parameter are studied in the energy range of μ ≲ 25 GeV based on the five-loop calculations according to QCD renormalization group equation. Position of the Landau pole of the dependence (QCD scale parameter ) is calculated in the five-loop order for the first time. Energy dependence of the running coupling constant in the given energy range is very well described by the proposed simple one-pole formula.

【 授权许可】

Unknown