  In this paper the optimal unitarity lower bound on logarithmic slope of the
diffraction peak is investigated. It is shown that the unitarity lower bound is
just the optimal logarithmic slopes predicted by the principle of least
distance in space of states. A systematic tendency towards the saturation of
the most forward-peaked limit is observed from all the available experimental
data of all principal hadron-hadron (e.g., antiproton-proton, proton-proton,
kaon-proton, pion-proton) scatterings practically at all laboratory momenta.

High Energy Physics - Phenomenology