Deeply virtual Compton scattering in the tensor-pomeron approach

The two-tensor-pomeron model proposed previously to describe low x DIS data is applied real and virtual Compton scattering on a proton. includes two tensor pomerons, soft hard one, reggeons. We include contributions of both transverse longitudinal photons. show that this gives very good description experimental at small Bjorken deeply (DVCS) from HERA. reggeon exchange term particularly relevant for describing the real-photon-proton measured lower ?p energies FNAL. present fits which differ somewhat in strength pomeron contribution. In we find interference between soft- hard-pomeron plays an important role. DVCS soft-pomeron contribution considerable up Q2?20 GeV2. Our allows study transition small-Q2 regime, including photoproduction (Q2=0) limit, large-Q2 limit. also discuss ratio cross sections longitudinally transversely polarized photons ??p??p as function |t| Q2. R˜(Q2,W2,t)=(d?L/dt)/(d?T/dt) strongly increases with t. findings may be checked future lepton-nucleon experiments low-x instance, Electron-Ion Collider BNL (EIC), and, if LHeC realized, LHC.