E. Ferreira, A. Kohara, T. Kodama

Eur. Phys. J. C 81, 290 (2021)

07/04/2021

Abstract

With analytical representation for the pp scattering amplitudes introduced and tested at lower energies, a description of high precision is given of the 𝑑𝜎/𝑑𝑡 data at 𝑠√=13 TeV for all values of the momentum transfer, with explicit identification of the real and imaginary parts. In both t and b coordinates the amplitudes have terms identified as of non-perturbative and perturbative nature, with distinction of their influences in forward and large |t| ranges and in central and peripheral regions respectively. In the forward range, the role of the Coulomb-nuclear interference phase is investigated. The energy dependence of the parameters of the amplitudes are reviewed and updated, revealing a possible emergence of a peculiar behavior of elastic and inelastic profiles in b-space for central collisions, which seems to be enhanced quickly at higher energies. Some other models are also briefly discussed in comparison, including the above mentioned behavior in b-space.

10.1140/epjc/s10052-021-09056-1