Gribov Theory of Nuclear Interactions and Particle Densities at Future Heavy-Ion Colliders

Details Gribov Theory of Nuclear Interactions and Particle Densities at Future Heavy-Ion Colliders Gribov Theory of Nuclear Interactions and Particle Densities at Future Heavy-Ion Colliders

1999-03-03

arxiv.org/abs/hep-ph/9903244v1

Heavy Ion Phys. 9 (1999) 169-186

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 12 postscript figures. Contributed paper to the Gribov Memorial Volume, Acta Physica Hungarica (Heavy Ion Physics)

Scientific paper

Gribov approach to high-energy interactions of hadrons and nuclei is reviewed and applied to calculation of particle production in heavy-ions collisions. It is pointed out that the AGK (Abramovsky, Gribov, Kancheli) cutting rules is a powerful tool to investigate particle spectra in these processes. It leads, in the Glauber approximation, to a simple formula for the density of hadrons produced in the central rapidity region in nucleus-nucleus interactions. An estimate of this density for RHIC and LHC is presented and compared with results of Monte-Carlo calculations. It is shown that the Glauber approximation substantially overestimate particle densities compared to the results of the complete Gribov theory. This is due to extra shadowing in the system, related to large mass diffraction which leads to a strong decrease of particle densities at mid rapidities. Our method of calculation of these effects has been applied to the problem of shadowing of nuclear structure functions and a good agreement with experimental data has been obtained.

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