Analysis of the Running Coupling Constant αs(q2) of π– Mesons and Protons from π– + C Interactions at 40 GeV/c and p + p Interactions at 205 GeV/c

This paper presents an analysis of the running coupling constant α ₛ(q²) using data from π ⁻ + C interactions at 40\,\,GeV/ 1pt c and $$p + p$$ interactions at 205\,\,GeV 1pt / 1pt c . It is known that choosing the correct value for the Λ _QCD cut parameter is very important for calculating the right values of the strong coupling constant α ₛ(q²) . In our study, we used the value Λ _QCD = 0.197\,GeV , which was obtained in our previous work [3, 4]. Finally, the results for α ₛ(q²) are compared with theoretical QCD predictions.