Perturbative QCD Analysis of Local Duality in a fixed W^2 Framework
High Energy Physics - Phenomenology
2014-11-17 v2
Abstract
We study the global Q^2 dependence of large x, F_2 nucleon structure function data, with the aim of providing a perturbative-QCD based, quantitative analysis of parton-hadron duality. As opposed to previous analyses at fixed x, we use a framework in fixed W^2. We uncover a breakdown of the twist-4 approximation with a renormalon type improvement at O(1/Q^4) which, by affecting the initial evolution of parton distributions, will have consequences for pQCD analyses also at large x and very large Q^2.
Cite
@article{arxiv.hep-ph/0111063,
title = {Perturbative QCD Analysis of Local Duality in a fixed W^2 Framework},
author = {S. Liuti and R. Ent and C. E. Keppel and I. Niculescu},
journal= {arXiv preprint arXiv:hep-ph/0111063},
year = {2014}
}
Comments
RevTex4, 8 pages, 3 figures