Pion form factor in QCD sum rules, local duality approach, and O(A_2) fractional analytic perturbation theory

Details Pion form factor in QCD sum rules, local duality approach, and O(A_2) fractional analytic perturbation theory Pion form factor in QCD sum rules, local duality approach, and O(A_2) fractional analytic perturbation theory

2009-09-24

arxiv.org/abs/0909.4527v2

Nucl.Phys.Proc.Suppl.198:204-207,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, invited talk at the 3rd Joint International Hadron Structure'09 Conference, Tatranska Strba (Slovak Republ

Scientific paper

10.1016/j.nuclphysbps.2009.12.04

Using the results on the electromagnetic pion Form Factor (FF) obtained in
the $O(\alpha_s)$ QCD sum rules with non-local condensates \cite{BPS09} we
determine the effective continuum threshold for the local duality approach.
Then we apply it to construct the $O(\alpha_s^2)$ estimation of the pion FF in
the framework of the fractional analytic perturbation theory.

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