Resummation in Fractional APT: How many loops do we need to take into account?

Details Resummation in Fractional APT: How many loops do we need to take into account? Resummation in Fractional APT: How many loops do we need to take into account?

2009-05-14

arxiv.org/abs/0905.2356v2

Acta Phys. Pol. (Proc. Suppl.), B2, 241--247 (2009)

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 1 figure, talk presented at the International Meeting "Excited QCD", February 8--14, 2009, Zakopane (Poland), misprin

Scientific paper

We give a short introduction to the Analytic Perturbation Theory (APT) and
its generalization to Fractional powers -- FAPT. We describe how to treat
heavy-quark thresholds in FAPT and then show how to resum perturbative series
in both the one-loop APT and FAPT. As an application we consider FAPT
description of the Higgs boson decay $H^0\to b\bar{b}$.

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