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arXiv · hep-ph/0111063

Perturbative QCD Analysis of Local Duality in a fixed W^2 Framework

S. Liuti·R. Ent·C. E. Keppel·I. Niculescu
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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.

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S. Liuti, R. Ent, C. E. Keppel, I. Niculescu. 2001-12-12. Perturbative QCD Analysis of Local Duality in a fixed W^2 Framework. https://doi.org/10.1103/physrevlett.89.162001

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