Measurement of leading proton production with ZEUS at HERA

The semi-inclusive reaction e+p -> e+Xp, with the final state proton carrying 
a large fraction of the incoming proton energy, x_L > 0.32, and having a 
transverse momentum squared p_T2 < 0.5 GeV2, was studied with the 
ZEUS detector at HERA. The data cover photon virtualities Q2 > 3 GeV2  
and photon proton centre-of-mass energies 45 < W < 225 GeV. Leading protons 
were detected with the ZEUS leading proton spectrometer. The leading-proton 
production cross section and rates are presented as functions of x_L, 
p_T2, Q2 and the Bjorken scaling variable, x.