A Quasi-Potential Approach for Describing pp-Scattering at High Energies

Abstract

Research into elastic scattering is one of the main methods for studying the structure and interaction between highenergy particles. Among the processes of elastic scattering of hadrons, the proton-proton scattering has a special place, since the presence of primary proton beams in accelerators allows the proton interaction to be studied at the highest energy values available. Theoretical models of elastic pp-scattering give very close predictions concerning the positions of differential cross-section minima, that is, all of them are largely constructed similarly to optical diffraction. The problems inherent in comparison of the well-known models with experiment have stimulated the active search of the ways to construct an adequate description of experimental features of elastic scattering at high energies. A quasi-potential approach to describing elastic proton-proton scattering is considered here on the basis of an eikonal approximation. A variable parameter is used in this approximation instead of an impact parameter.