Deep inelastic events containing a forward photon as a probe of small   $x$ dynamics
  We calculate the rate of producing deep inelastic events containing an energetic isolated forward photon at HERA. We quantify the enhancement arising from the leading $\log 1/x$ gluon emissions with a view to using such events to identify the underlying dynamics. 
J. Kwiecinski, S.C.Lang, A.D.Martin