Speaker
            
    Murdorj, Urangua
        
            (Mongolian Academy of Science, Institute of Physics and Technology)
        
    Description
This paper is devoted to the study of the running coupling constant $\alpha_s$ ($q^2$ ) of $\pi^-$ meson and protons from p+p and p+C interactions at 4.2 GeV/c. It is well known fact that the more correct value of the cut parameter $\Lambda_{QCD}$ in the formula of $\alpha_s$ ($q^2$ ) plays very important role in the obtaining the right values of the strong coupling constant $\alpha_s$ ($q^2$ ). The value of $\Lambda_{QCD}$, determined in previous works, was employed in our calculations,
\begin{equation}
    \Lambda_{QCD}= (c \hbar) GeV = 0.197 GeV
\end{equation}
The values of $\alpha_s$ ($q^2$ ) obtained with this cut parameter are compared to the QCD predictions.
Authors
        
            
                
                        Mr
                    
                
                    
                        Baatar, Otgongerel
                    
                
                
                        (Institute of Physics and Technology, Mongolia)
                    
            
        
            
                
                        Mr
                    
                
                    
                        Gombojav, Sharkhuu
                    
                
                
                        (Mongolian Academy of Science, Institute of Physics and Technology)
                    
            
        
            
                
                
                    
                        Maamuu, Sovd
                    
                
                
                        (IHEP)
                    
            
        
            
                
                
                    
                        Malakhov, Aleksandr
                    
                
                
                        (JINR)
                    
            
        
            
                
                
                    
                        Murdorj, Urangua
                    
                
                
                        (Mongolian Academy of Science, Institute of Physics and Technology)
                    
            
        
            
                
                        Mrs
                    
                
                    
                        Narankhuu, Khishigbuyan
                    
                
                
                        (Mongolian Academy of Science, Institute of Physics and Technology)
                    
            
        
            
                
                        Mr
                    
                
                    
                        Tseepeldorj, Baatar
                    
                
                
                        (Institute of Physics and Technology, MAS)