Where is the black disc limit?

P. Desgrolard, L. Jenkovszky, B. Struminsky
1999 European Physical Journal C: Particles and Fields  
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 until $10^5$ GeV, while the black disc limit is saturated around 1 TeV. It will be followed by a larger transparency of the scattered particles near the center.
doi:10.1007/s100529900154 fatcat:we7jlwu4bbho7ocazyvvp4oe6y