62 research outputs found
Elastic scattering at 7 TeV and high energy cross section for cosmic ray studies
The recent measurements of the elastic cross section by the TOTEM
Collaboration together with the first estimations of the inelastic cross
sections by other LHC detectors are used to test the simplest version of the
geometrical model of the proton-proton scattering. We show that the description
found for lower energy data, with the modest adjustment of the model parameter
extrapolation, could be, in principle, used to describe the LHC measurement and
to predict the cross sections in very high energy cosmic ray domain. However,
the shape of the first elastic dip in the elastic differential scattering cross
section suggests that ratio of the real to the imaginary part of the elastic
amplitude is falling rather fast and the analysis of the elastic cross section
fraction suggests that the geometrical picture of the proton-proton collision
should be modified considerably when entering the ultra high-energy domain.Comment: 6 pages, 2 figure
- …