Parton-Hadron Duality in Unpolarised and Polarised Structure Functions

Abstract

We study the phenomenon of parton-hadron duality in both polarised and unpolarised electron proton scattering using the HERMES and the Jefferson Lab data, respectively. In both cases we extend a systematic perturbative QCD based analysis to the integrals of the structure functions in the resonance region. After subtracting target mass corrections and large x resummation effects, we extract the remaining power corrections up to order 1/Q^2. We find a sizeable suppression of these terms with respect to analyses using deep inelastic scattering data. The suppression appears consistently in both polarised and unpolarised data, except for the low Q^2 polarised data, where a large negative higher twist contribution remains. Possible scenarios generating this behavior are discussed.

17 pages, 9 figures

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Cited by in corpus (21)

• Quark-hadron duality in electron scattering
• Quark-Hadron Duality in Electron Scattering
• Quark-Hadron Duality in Spin Structure Functions g1p and g1d
• Proton Spin Structure in the Resonance Region
• New method for extracting neutron structure functions from nuclear data
• Target mass corrections revisited
• Extraction of ${\alpha }_s$ from deep inelastic scattering at large $x$
• Quark-Hadron Duality in Neutron (3He) Spin Structure
• Quark-hadron duality and truncated moments of nucleon structure functions
• Higher twist analysis of the proton g_1 structure function
• What does kinematical target mass sensitivity in DIS reveal about hadron structure?
• Direct observation of quark-hadron duality in the free neutron F_2 structure function
• Scaling of Dirac Fermions and the WKB approximation
• Target mass corrections and twist-3 in the nucleon spin structure functions
• Effect of bound nucleon internal structure change on nuclear structure functions
• Exploring Nucleon Structure with the Self-Organizing Maps Algorithm
• Analysis of ${\alpha }_s$ from the realization of quark-hadron duality
• Modeling quark-hadron duality in polarization observables
• Target mass corrections to matrix elements in nucleon spin structure functions
• Detailed Study of Quark-Hadron Duality in Spin Structure Functions of the Proton and Neutron
• The Strong Coupling Constant from Hadron Structure Phenomenology