Study of Deep Inelastic ep-Scattering at High-Q^2 with ZEUS at HERA
  Measurements of differential cross sections for deep inelastic ep neutral-current (NC) and charged-current (CC) reactions are presented using data taken during the 1994-97 e^+p and the 1998-99 e^-p running periods. The structure function xF_3 has been extracted combining NC e^-p and e^+p data sets. Both the measured cross sections and xF_3 are well described by the standard model predictions using standard PDF's. 
A. Kappes (Bonn University, for the ZEUS collaboration)