Quark-hadron duality in electron-pion scattering

Details Quark-hadron duality in electron-pion scattering Quark-hadron duality in electron-pion scattering

2002-08-28

arxiv.org/abs/hep-ph/0208258v2

Eur.Phys.J. A17 (2003) 223-234

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 7 figures, to appear in Eur. J. Phys. A

Scientific paper

We explore the relationship between exclusive and inclusive electromagnetic scattering from the pion, focusing on the transition region at intermediate Q^2. Combining Drell-Yan data on the leading twist quark distribution in the pion with a model for the resonance region at large x, we calculate QCD moments of the pion structure function over a range of Q^2, and quantify the role of higher twist corrections. Using a parameterization of the pion elastic form factor and phenomenological models for the pi -> rho transition form factor, we further test the extent to which local duality may be valid for the pion.

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