  Regge-pole based descriptions of pion-electroproduction on nucleons have
given a very good description of the longitudinal components of the cross
sections. However, these very same models grossly underestimate the transverse
components. A related problem appears in QCD-based scaling arguments that
predict the predominance of longitudinal over transverse electroproduction of
pions by terms $\propto Q^2$. However, data from JLAB, Cornell and DESY,
covering a wide kinematical range $1 < Q^2 < 11\, {\rm GeV}^2$ and $2\, {\rm
GeV} < W < 4\, {\rm GeV}$, do not show this expected behavior. We address here
this issue of the transverse response in pion-electroproduction by considering
the contributions of high-lying ($W > 2$ GeV) nucleon resonances to pion
production. The coupling strengths and form factors are obtained through
resonance-parton duality. We show that in a wide range of electron energies and
four-momentum transfers such a model describes all the available data very
well.
