Perturbative QCD analysis of local duality in a fixed w2 framework.
We study the Q2 dependence of large x F2 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 W2. We uncover a breakdown of the twist-4 approximation with a renormalon type improvement at O(1/Q(4)) which affects the initial evolution of parton distributions.
Liuti
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University of Virginia, Charlottesville 22901, USA.
Ent
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Keppel
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Niculescu
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