Quark-hadron duality and higher twist contributions in structure functions

Details Quark-hadron duality and higher twist contributions in structure functions Quark-hadron duality and higher twist contributions in structure functions

2005-01-19

arxiv.org/abs/hep-ph/0501180v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures

Scientific paper

10.1063/1.1871651

Quark-hadron duality is studied in a systematic way for polarized and unpolarized structure functions, by taking into account all the available data in the resonance region. In both cases, a precise perturbative QCD based analysis of the integrals of the structure functions in the resonance region has been performed: non perturbative contributions have been disentangled, higher twist contributions have been evaluated and compared with the ones extracted in the deep inelastic scattering region. A different behavior for the unpolarized and polarized structure functions at low Q^2 is found.

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