Resummation in (F)APT
Abstract
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 heavy-quark thresholds. Using this approach we analyze the Higgs boson decay . 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 shifts.
Cite
@article{arxiv.0803.3013,
title = {Resummation in (F)APT},
author = {A. P. Bakulev and S. V. Mikhailov},
journal= {arXiv preprint arXiv:0803.3013},
year = {2008}
}
Comments
Written version of the talk given at the Memorial Igor Solovtsov Seminar, held on January 17--18, 2008, at the Bogoliubov Laboratory of Theoretical Physics, JINR (Dubna). 15 pages, 1 figure, 1 table. Misprints are corrected and style of proceedings is reproduced