Impact of the f-Reggeon exchanges on the observables of the single diffractive dissociation of nucleon at ultrahigh energies

Single diffractive dissociation (SDD) of nucleon in high-energy proton-proton and proton-antiproton collisions is considered in terms of a simple two-Reggeon model with nonlinear Regge trajectories. It is demonstrated that the f -Reggeon impact on the corresponding cross-sections is not negligible up to the LHC energies. As well, it is shown that the account of the f -Reggeon exchanges allows to describe the elastic diffractive scattering (EDS) and SDD of nucleons at ultrahigh energies in the framework of a unified phenomenological scheme. The predictive value of the proposed model is verified.