2 research outputs found
FAPT: a Mathematica package for calculations in QCD Fractional Analytic Perturbation Theory
We provide here all the procedures in \texttt{Mathematica} which are needed
for the computation of the analytic images of the strong coupling constant
powers in Minkowski ( and ) and Euclidean (
and ) domains at arbitrary energy scales
( and , correspondingly) for both schemes --- with fixed number of
active flavours and the global one with taking into account
all heavy-quark thresholds. These singularity-free couplings are inevitable
elements of Analytic Perturbation Theory (APT) in QCD and its generalization
--- Fractional APT, needed to apply the APT imperative for
renormalization-group improved hadronic observables.Comment: 23 pages, 6 figures. Citations added. Now it matches version approved
for publication in Comp. Phys. Commu