Eikonal model analysis of elastic proton–proton collisions at 52.8 GeV and 8 TeV

Under the influence of standardly used description of Coulomb-hadronic interference proposed by West and Yennie the protons have been interpreted as transparent objects; elastic events have been interpreted as more central than inelastic ones. It will be shown that using eikonal model the protons may be interpreted in agreement with usual ontological conception; elastic processes being more peripheral than inelastic ones. The corresponding results (differing fundamentally from the suggested hitherto models) will be presented by analyzing the most ample elastic data set measured at the ISR energy of 52.8 GeV and the LHC energy of 8 TeV. Detailed analysis of measured differential cross section will be performed and possibility of peripheral behavior on the basis of eikonal model will be presented. The impact of recently established electromagnetic form factors on determination of quantities specifying hadron interaction determined from the fits of experimental elastic data in the broadest region of momentum transfers will be analyzed.

The eikonal model of reactions involving exotic nuclei; Roy Glauber's legacy in today's nuclear physics

In this contribution, the eikonal approximation developed by Roy Glauber to describe high-energy quantum collisions is presented. This approximation has been—and still is—extensively used to analyse reaction measurements performed to study the structure of nuclei far from stability. This presentation focuses more particularly on the application of the eikonal approximation to the study of halo nuclei in modern nuclear physics. To emphasise Roy Glauber’s legacy in today’s nuclear physics, recent extensions of this model are reviewed.

Models of Elastic pp Scattering at High Energies – Possibilities, Limitations, Assumptions, and Open Ques-tions

The simplest collision process, the elastic scattering of protons, has been measured at various energies and in a broad interval of scattering angles. Its theoretical description is, however, much more delicate, than it may seem at first glance. The widely used eikonal model allowed one to analyze the pp elastic scattering data at an ISR energy of 52.8 GeV and the TOTEM data at a much higher LHC energy of 8 TeV. The results represent the most detailed elaborated impact parameter analysis of pp data which has ever been performed. They have helped to identify several deeper open questions and problems concerning all widely used theoretical frameworks used for the description of the elastic pp scattering. The problems should be further studied and solved to derive some important proton characteristics which may be obtained with the help of the elastic scattering.