Nuclear Physics and Atomic Energy

Nuclear Physics and Atomic Energy

  ISSN: 1818-331X (Print), 2074-0565 (Online)
  Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine
  Languages: Ukrainian, English, Russian
  Periodicity: 4 times per year

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Nucl. Phys. At. Energy 2019, volume 20, issue 1, pages 5-17.
Section: Nuclear Physics.
Received: 10.10.2018; Accepted: 17.04.2019; Published online: 26.06.2019.
PDF Full text (ru)

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

V. A. Babenko*, N. M. Petrov

M. M. Bogolyubov Institute of Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine

*Corresponding author. E-mail address:

Abstract: Quantum chromodynamics (QCD) running coupling constant αs and its dependence on the energy scale renormalization parameter μ 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 μ ≡ Λ = 664.9 MeV of the αs(μ) dependence (QCD scale parameter Λ) is calculated in the five-loop order for the first time. Energy dependence αs(μ) of the running coupling constant in the given energy range is very well described by the proposed simple one-pole formula.

Keywords: quantum chromodynamics (QCD), coupling constant of strong interaction, QCD perturbation theory, renormalization group equation of QCD.


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