Quark-hadron duality in electron-pion scattering

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.