On the analytically-improved running coupling in QCD

F. T. Brandt, J. Frenkel, D. G. C. McKeon +1

We examine, in the `t Hooft renormalization scheme, the analytic running coupling ${\bar{\alpha }}_t(Q^2)$ in QCD, using the two-loop $\beta$-function with positive expansion parameters ${\beta }_0$ an…