3 papers
hep-ph2001
Explicit expressions for Euclidean and Minkowskian QCD observables in analytic perturbation theory
D. S. Kourashev, B. A. Magradze
Technical aspects of the Shirkov-Solovtsov's analytic perturbation theory (APT) are considered. We construct explicitly two sets of specific functions, and ${…
hep-ph2000
Exact analytic two-loop expressions for some QCD observables in the time-like region
Dmitri S. Kourashev
The author of this work have got explicit expressions for the timelike region at Next-to-Leading-Order (NLO) as for the coupling function so for QCD observables. These expressions…
hep-ph1999
The QCD observables expansion over the scheme-independent two-loop coupling constant powers, the scheme dependence reduction
Dmitri S. Kourashev
The method suggested in this paper allows to express the n-th order renorm-group equation solutions over the powers of the two-loop solution, that can be obtained explicitly in ter…