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Where is the black disc limit?

1999; Springer Science+Business Media; Volume: 11; Issue: 1 Linguagem: Inglês

10.1007/s100529900154

1434-6052

P. Desgrolard, L. L. Jenkovszky, B. V. Struminsky,

Quantum Chromodynamics and Particle Interactions

By using realistic models for elastic hadron scattering, we demonstrate that at present accelerator energies the s-channel unitarity bound is safe, not to be reached before $10^5$ GeV, while the black disc limit is saturated around 6 TeV. By increasing the energy, a larger transparency of the scattered particles near the center, surrounded by a black ring, is expected. Unitarity effects are incorporated and their effects are studied both in a phenomenological and formal, analytical way.