
Diffractive photoproduction of high p_t photons at HERA 
Reference 
L Favart, presented at EPS03, Summer 2003 
Document 
Conference paper or talk

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 Tables 

Contact 
Matthew Beckingham 
Abstract 
The process gamma p > gamma Y in which the outgoing photon has transverse momentum p_t (gamma) > 2 GeV and there is a large rapidity gap between the proton dissociative system Y and the outgoing photon is studied for the first time with the H1 detector at HERA. Cross sections are measured differentially in the squared 4momentum transfer at the proton vertex, t, and x_pom=(E+p_z)_gamma / 2 E_p, where E_p is the incoming proton energy. All cross sections are consistent with a perturbative QCD model calculated using the leading logarithmic approximation of BFKL. 
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