Abstract
We calculate R e + e − at low energies using method of variational perturbation theory in quantum chromodynamics. We apply the “smearing” method to compare the obtained theoretical prediction for R e + e − with experimental data down to lowest energies. The problem of the “freezing” of the QCD coupling constant is discussed.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
