Remarks on the Kinematics of Multiperipheral Processes

Abstract
We study the implications of requiring that the "subenergies" si and the momentum transfers ti of a multiple production process be in the Regge domain. We show that even for very high-energy accelerator or cosmic-ray processes, the si are too small compared to the ti and the masses for one to apply a multi-Regge formalism for the two-particle → n-particle amplitude. Some alternatives are suggested.