Dispersive approaches for three-particle final states interaction

Understand

In this work, we present different representations of Khuri-Treiman equation, the advantage and disadvantage of each representations are discussed.

• Using a toy model for scattering amplitude, we study the sensitivity of solution of KT equation to the left hand cut of this toy model and to the different approximate methods.
• At last, we briefly discuss Watson's theorem when three particles in final states are involved.