Measurement of prompt photon production in deep inelasitic scattering with ZEUS at HERA
 
Prompt photon production in deep inelastic ep scattering was measured
with ZEUS at HERA  using an integrated luminosity of 300 pb-1. Isolated 
photons in the transverse energy and pseudorapidity ranges 5 < E_T < 15 GeV 
and -0.7 < \eta < 0.9 were observed for virtualities of the exchanged 
photon of Q^2 > 35 GeV^2. Cross-sections are presented for inclusive 
prompt photons and for those accompanied by a single jet with E_T > 6 GeV 
and -1.5 < eta < 1.7. The measured cross sections are compared to 
theoretical predictions.