The Structure of the Virtual Photon
  Measurements of dijet cross sections for virtual photons are presented as a function of $\xo$, the fraction of the virtual photon energy invested in the production of the dijet system, using the ZEUS detector. Comparisons to QCD predictions show that a resolved photon component is needed to describe the data up to values of the photon virtuality comparable to the scale of the interaction. 
Claudia Glasman (University of Glasgow, representing the ZEUS   Collaboration)