Abstract
Analytic properties of the three-body unitarity integral are studied for the production amplitude corresponding to one-particle-exchange diagrams. The condition under which the absorptive part has singularities is discussed. For a simple degenerate case, it is shown that the singularity curve can be represented by an explicit elementary function. It is shown further that this singularity curve is identical to that from the conventional Landau-Bjorken analysis.
- Received 18 January 1965
DOI:https://doi.org/10.1103/PhysRev.138.B1222
©1965 American Physical Society
