The paper presents the phenomenological analysis of the energy dependence for the ratio of elastic to total cross section in proton-proton and antiproton-proton scattering. The analytic functions based on the study of low- and high-energy experimental data for various scattering parameters provide the quantitative description of energy dependence of the ratio with statistically acceptable qualities in wide range of collision energy $\sqrt{ s} \geq 3$ GeV in the case of the separate datasets for $pp$, $\bar{ p}p$ collisions and at $\sqrt{ s} \geq 5$ GeV for the joined experimental data ensemble. Based on the fit results the estimations are derived for the ratio of elastic to total cross section in $pp$ scattering at various $\sqrt{ s}$ up to energy frontier $\sqrt{ s}=10$ PeV which can be useful for present and future hadron colliders as well as for cosmic ray measurements at ultra-high energies. The indication is observed for onset of the asymptotic region at $\sqrt{ s} \gtrsim 5-10$ PeV for the ratio of cross sections under consideration.
Categories: hep-ph hep-ex