Infrared freezing of Euclidean QCD observables in the one-chain approximation
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We consider the one-chain term in a skeleton expansion for Euclidean QCD observables. Focusing on the particular example of the Adler D function, we show that although there is a Landau pole in the coupling at Q^2=\Lambda^2 which renders fixed-order perturbative results infinite, the Landau pole is absent in the all-orders one-chain result. In this approximation one has finiteness and continuity at Q^2=\Lambda^2, and a smooth freezing as Q^2 decreases to 0.
Cite
@article{arxiv.hep-ph/0610183,
title = {Infrared freezing of Euclidean QCD observables in the one-chain approximation},
author = {C. J. Maxwell},
journal= {arXiv preprint arXiv:hep-ph/0610183},
year = {2007}
}
Comments
4 pages, presented at the XXXIII International Conference on High Energy Physics (ICHEP06), Moscow, Russia, 26 July-2 August 2006