Proton-proton diffractive collisions at ultrahigh energies

Proton-proton total and elastic cross sections are considered in the Dakhno-Nikonov eikonal model [L. G. Dakhno and V. A. Nikonov, Eur. Phys. J. A 8, 209 (1999)] at ultrahigh energies. The model takes into account the quark structure of hadrons and the gluon structure of the supercritical Pomeron that results in color screening. The Pomeron is considered as an input interaction term. The model gives a reasonably good description of the pre-LHC and LHC data for $pp$ collisions with a growth of the type ln²s for total and elastic cross sections and (τ=q_⊥²ln²s) scaling for diffractive scattering. We present parameters of the supercritical Pomeron and provide predictions for the energy region √s~10²--10⁴ TeV.