Resummation in (f)apt
نویسنده
چکیده
We present new results on the summation of nonpower-series expansions in QCD Analytic Perturbation Theory (APT) in the one-loop approximation. We show how to generalize the approach suggested by one of us earlier to the cases of APT and Fractional APT (FAPT) with heavyquark thresholds. Using this approach we analyze the Higgs boson decay H → b̄b. We produce estimations of the higher-order corrections importance in (F)APT and present a very transparent interpretation of the resummation results in terms of ΛQCD shifts.
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