QCD analysis of deep inelastic diffractive scattering at HERA

The QCD analysis of deep inelastic diffractive scattering is performed assuming the dominance of the “soft” pomeron exchange and a simple, physically motivated parametrization of the parton distributions in a pomeron. Results of the analysis are compared with the recent data obtained by the H1 Collaboration at HERA. Both the LO and NLO approximations are considered and the theoretical predictions concerning the quantity R = FLDFTD for diffractive structure functions are presented.