1 Department of Physics, Bielefeld University, 33501 Bielefeld, Germany
2 Department of Physics, Dortmund University, 44221 Dortmund, Germany
Received: 27 August 1999 / Revised version: 19 November 1999 /
Published online: 17 February 2000 - © Springer-Verlag 2000
We provide a formulation of generalized vector dominance (GVD) for low-xdeep-inelastic scattering that explicitly incorporates the transition and a QCD-inspired ansatz for the forward-scattering amplitude. The destructive interference originally introduced in off-diagonal GVD is recovered in the present formulation and traced back to the generic structure of two-gluon-exchange as incorporated into the notion of colour transparency. Asymptotically, the transverse photoabsorption cross section behaves as , implying a logarithmic violation of scaling for F2, while the longitudinal-to-transverse ratio decreases as .
Copyright Società Italiana di Fisica, Springer-Verlag 2000