Extended Lee model and three-particle equations
- 1 July 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 26 (1), 204-210
- https://doi.org/10.1103/physrevc.26.204
Abstract
The extended Lee model describes the interaction of two fermions, V and N, with a scalar boson θ and its antiparticle θ¯ through the virtual processes V⇄N+θ and N⇄V+θ¯. Here it is shown that the amplitudes for the physical processes V+θ→V+θ and V+θ→N+2θ can be obtained in a reasonable approximation from the solution of an Amado-Lovelace type of three-particle equation. The analysis presented gives some insight into the problem of extending a crossing symmetric, Chew-Low type of T matrix off the energy shell.Keywords
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